so only thing he can do is reinstall whole game?
my friend who does not have an account on forums has accidentally turned on shissu ava/game booster and now all the textures are weird and he can not turn them off or change them back can you please give advice?
I've never used it, but before doing a full game re-install, I'd suggest:
1. Quit game
2. Remove the addon
3. Rename the eso "UserSettings.txt" file to something else (save it just in case)
4. Start the game and see if that fixed it (your settings will have been reverted to defaults)
I think he has submitted ticket to get forum account few times at least that what he told me as for ZOS will they help with addon problem? since it's not really ZOS problem