question

Hi, I have a Samsung (Google) Nexus 10 32GB and I purchased an APP called "Hide It Pro" aka "Audio Manager". This app worked fine but then I decide to "hide" the Amazon Appstore APP. It would not function and attempts to "unhide" it were unsuccessful, by the way it is tablet is rooted. So I downloaded the APK package from Amazon and tried to re-install it. Well the installed says "Done" but would let me "Open" it as is normal and it does not show up in the standard Nexus 10 launcher or Nova Launcher Prime. Can anyone tell me how I can un-install all the Amazon written www.amazon apps and re-install them? I would hate to have to reset the tablet and re-install everything. Obviously something is corrupted but I do not have a backup before this happened. Any help would be GREATLY appreciated. The author of "Hide It Pro" doesn't provide support and has not answered an e-mail on the issue. Best Regards.