Amazon appstore wont fully load so i cant buy apps

Helloooo. Your request or question lacks a few specifics please.
1. Install amazon video app...where? On which device iPad, iPhone or android phone/tablet?
2. You need to check the version of the app and what OS it is compatible with
3. Once you download the standalone/raw app, navigate to where you have the file and click on it to start the installation process.
4. You can automatically install the app from the appstore too.

Look for an answer here. Amazon Appstore for Android on Kindle Fire

you need to login in the appstore with a username and password

1. Are you connected to a WiFi network when you are attempting to download the apps ?

2. If the answer to 1. is 'Yes', which application store you go to to get the apps: (a) Apple AppStore; (b)Google Play Store; or (c) Windows 8 AppStore ? The correct answer is (c), because the Vivotab Smart is an Windows 8.x tablet.

Hope this helps

To deregister your Kindle Fire tablet:

• From Amazon.com, go to Your Apps and Devices.
• Click Your devices.
• Click the Actions button, and then click Deregister device. Deregistering your device prohibits Appstore purchases on that device, and disables the use of any app purchased from Amazon Appstore for Android and downloaded to that device. You can re-enable purchasing from the device by signing in to the Amazon Appstore for Android again.

You can also reset the device after you deregister, so once you register you device will be like new:

• Slide down the top menu and tap "More...":
• On the Settings screen tap "Device":
• At the very bottom you'll see the option, "Reset to Factory Defaults".

Hope that helps!

Grab your largest hammer and smash this POS and buy a real tablet. I am stuck with 4 of these stupid things now.

There's no Cydia on Android. You'll have to go to Andoird Market, Amazon Appstore, or other app markets. Also, you can install just by downloading the .apk file to your handset and running it.