Keep losing wifi connection on iPad air .have to close down ipad to reconnect

In your case, you can still try some methods to fix it. Just follow below steps.

If you've neither synced with iTunes nor set up Find My iPhone in iCloud, you'll need to wipe your iPad to factory setting to remove the password, which means you'll suffer losing all your data on iPad and get it as a new one.
Please pay attention there is a slight difference in putting different models of iPad into recovery mode.
iPad Air

• 1. Turn off your iPad Air, press and hold the Home button.
• 2. While holding the Home key, connect the USB cable to the device. Wait until the Apple logo appears and keep holding the Home button for few more seconds.
• 3. Continue holding the Home button until the iTunes logo appears.

iPad mini/iPad pro

• 1. Connect your iPad to your computer or laptop and open iTunes.
• 2. While your device is connected, force to restart it.
• 3. Press and hold the Sleep/Wake and Home buttons at the same time. Don't release when you see the Apple logo. Keep holding both buttons until you see the recovery mode screen.

Now you have entered the recovery mode, and

1. When you see the option to Restore and Update, click it.

2. Wait for the process to finish. Then you can set up and use your device.

For more methods, check: How to Unlock iPad?

Press and hold down the Home button on the front of your iPhone, iPod touch, or iPad while still holding down the On/Off button. Keep holding both buttons as the screen turns off keep holding both buttons until the turns back on again and displays the Apple logo

I would reset the iPad and remove running apps you don't use.
press t.he home button twice and swipe all screens up, to close running apps. After that, press both the home button and the on/of button for several seconds, till the Apple loge comes on the screen. Then wait a minute to switch the iPad on. Could solve a lot. If not, check your wireless connection.

You have to reset your iPad. Just follow below steps.

How to unlock iPad without password or how to unlock disabled iPad? It is a good habit to have your iPad backed up regularly. In case of your iPad is locked, disabled or being stolen, you can easily recover your data from it. Otherwise, you'll lose all the data. To unlock iPad screen without password or to unlock disabled iPad mean you have to remove your previous pass code and restore your iPad. Here we introduce three methods which you can follow.
Method One: How to unlock iPad without password using iTunes

• 1. Connect iPad to the computer you have synced with.
• 2. Open iTunes on your computer and connect it with your iPad. If fortunate, you can enter the iTunes without password. But in most cases, there would be prompt asking for a pass code. Try another computer you've synced with, or use recovery mode. (The recovery mode will be mentioned in method three.)
• 3. Find your iPad in summary and make a manual backup. Once the backup have finished, click Restore your iPad with the most relevant back-up.

Method Two: How to unlock iPad screen without password with iCloud
You can also use iCloud to remove your password and recover your data if you have backed up before it was locked. And it is in the premise that you have set up Find My iPhone on your iPad, and you did remember your Apple ID, you can use iCloud to unlock your iPad.

• 1. Open your laptop or computer, go to icloud.com/find or open the iCloud app.
• 2. If the sign-in window pops up, just sign in with your Apple ID.
• 3. There's an All Devices button at the top-left of the window, click on it to call out a drop-down menu and choose your iOS device.
• 4. Click Erase (your device) in the prompt to finalize the process.
• 5. Now you can either recovery data to your device from a backup or set up as new if there isn't any back-up before.

Method Three: How to unlock a disabled iPad in recovery mode?
If you've neither synced with iTunes nor set up Find My iPhone in iCloud, you'll need to wipe your iPad to factory setting to remove the password, which means you'll suffer losing all your data on iPad and get it as a new one.
Please pay attention there is a slight difference in putting different models of iPad into recovery mode.
iPad Air

• 1. Turn off your iPad Air, press and hold the Home button.
• 2. While holding the Home key, connect the USB cable to the device. Wait until the Apple logo appears and keep holding the Home button for few more seconds.
• 3. Continue holding the Home button until the iTunes logo appears.

iPad mini/iPad pro

• 1. Connect your iPad to your computer or laptop and open iTunes.
• 2. While your device is connected, force to restart it.
• 3. Press and hold the Sleep/Wake and Home buttons at the same time. Don't release when you see the Apple logo. Keep holding both buttons until you see the recovery mode screen.

Now you have entered the recovery mode, and

1. When you see the option to Restore and Update, click it.

2. Wait for the process to finish. Then you can set up and use your device.
For more details, check: How to Unlock iPad without Passcode

As for unlocking iPad, there are several ways you can resort to. Just follow one of them as below shows.

If you've neither synced with iTunes nor set up Find My iPhone in iCloud, you'll need to wipe your iPad to factory setting to remove the password, which means you'll suffer losing all your data on iPad and get it as a new one.
Please pay attention there is a slight difference in putting different models of iPad into recovery mode.
iPad Air

• 1. Turn off your iPad Air, press and hold the Home button.
• 2. While holding the Home key, connect the USB cable to the device. Wait until the Apple logo appears and keep holding the Home button for few more seconds.
• 3. Continue holding the Home button until the iTunes logo appears.

iPad mini/iPad pro

• 1. Connect your iPad to your computer or laptop and open iTunes.
• 2. While your device is connected, force to restart it.
• 3. Press and hold the Sleep/Wake and Home buttons at the same time. Don't release when you see the Apple logo. Keep holding both buttons until you see the recovery mode screen.

Now you have entered the recovery mode, and

1. When you see the option to Restore and Update, click it.

2. Wait for the process to finish. Then you can set up and use your device.

For more methods, check: How to Unlock iPad?

You can enter the recovery mode in iTunes and restore password on your disabled iPad. Just follow below steps to do that.

If you've neither synced with iTunes nor set up Find My iPhone in iCloud, you'll need to wipe your iPad to factory setting to remove the password, which means you'll suffer losing all your data on iPad and get it as a new one.
Please pay attention there is a slight difference in putting different models of iPad into recovery mode.
iPad Air

• 1. Turn off your iPad Air, press and hold the Home button.
• 2. While holding the Home key, connect the USB cable to the device. Wait until the Apple logo appears and keep holding the Home button for few more seconds.
• 3. Continue holding the Home button until the iTunes logo appears.

iPad mini/iPad pro

• 1. Connect your iPad to your computer or laptop and open iTunes.
• 2. While your device is connected, force to restart it.
• 3. Press and hold the Sleep/Wake and Home buttons at the same time. Don't release when you see the Apple logo. Keep holding both buttons until you see the recovery mode screen.

Now you have entered the recovery mode, and

1. When you see the option to Restore and Update, click it.

2. Wait for the process to finish. Then you can set up and use your device.
For more methods, check: How to Unlock iPad?

It's actually very easy, once you know how to do it. Click and hold down the Sleep/Wake button (located on the upper-right corner of your iPad). While you're holding down the Sleep/Wake button, hold down the Home button as well (located on the front of your iPad at the bottom).
Hold down both buttons until your iPad powers off. It will reboot and start again with a small silver Apple image on the screen. It takes about 30 seconds for the iPad completely start up.

If you forgot iPad password, there still are several methods to unlock iPad. Here take one of them as an instance.

If you've neither synced with iTunes nor set up Find My iPhone in iCloud, you'll need to wipe your iPad to factory setting to remove the password, which means you'll suffer losing all your data on iPad and get it as a new one.
Please pay attention there is a slight difference in putting different models of iPad into recovery mode.
iPad Air

• 1. Turn off your iPad Air, press and hold the Home button.
• 2. While holding the Home key, connect the USB cable to the device. Wait until the Apple logo appears and keep holding the Home button for few more seconds.
• 3. Continue holding the Home button until the iTunes logo appears.

iPad mini/iPad pro

• 1. Connect your iPad to your computer or laptop and open iTunes.
• 2. While your device is connected, force to restart it.
• 3. Press and hold the Sleep/Wake and Home buttons at the same time. Don't release when you see the Apple logo. Keep holding both buttons until you see the recovery mode screen.

Now you have entered the recovery mode, and

1. When you see the option to Restore and Update, click it.

2. Wait for the process to finish. Then you can set up and use your device.

For more methods, check: How to Unlock iPad?

Always a good idea to shut down and then turn back on (hold down both home button and power button until it turns all the way off. Wait a couple seconds, then press the power button to turn back on)

Try wireless again.

If nothing, then

Obviously check and make sure wifi is on under settings.

If still nothing,

Try resetting your network connections:
Settings > General, then tap Reset > Reset Network Settings

If you can't see any wifi networks at all, you might have a bad wifi card in the iPad. Bring back to an apple store.

I'm sure you've done this but try turning off wifi on iPad and then turning back on. Does your wifi name show?