Why won't my iPad accept my password for my WiFi?

Are you sure of Wifi password is correct?
if so, 1st; try restarting your ipad by holding down power/sleep button untill it show "Slide to shut down" leave it off for 10 seconds & then re-open it.enter the Wifi -password, sometimes this step works.

2nd solution ; try resetting your iPad network settings, it will not affect your ipad in any thing except it will forget all entered passwords for any wifi you have already connected before. go to General from Setting, choose resett, and inside only reset network setting, shut down ipad & try to connect to the wifi again. Hope this solution work for you. Also you may try shutting down & opening your router again after 10 seconds while off. Good Luck.

Make sure you delete the previous account and you are connected to wifi during that process.

Can you log in from another PC and change profile settings?

You will have to go to iCloud and click on "forgot my password" and will get an e-mail to reset a new one.

restore using itunes or icloud or any pc that you sync with before

Leave the password field blank in accounts

When typing in your password make sure that upper case and lower case letters are EXACTLY the same as your chosen password.

To reset it without having the screen lock code, you will have to find a computer that you can put iTunes on in order to hook up your iPad and reset it.

Did the router move with you?

My ipad is on and it won't do anything. When you touch the screen to go into emails or anything else, even to turn it off it won't do anything.