Jazz when u do the uninstall be sure to shut down the device and then start up again, I hate apple so not sure if they have or save cookies if they do erase those 2 before you do the shut down and after un install. Re install after fresh start up. Try the turning off all the in-game things zup told u and I would turn off the game audio to just in case. Check if the tablet is running other apps, put them to sleep or better yet close them. If these things do not work u will have to wait for the next update or e mail zuperman with as much info as u can about your device model to see if he can help u. other test is trying to create a new account just to see or try your account on another device like a cell phone or pc just to see if it opens. Hope u can find a fix.