Re: top right buttons not working

Try using the function keys if you're on PC. Perhaps they will still work. F1 for Live mode, F2 for Buy mode, F3 for Build mode, F4 for Gallery, F5 for Manage Worlds, and F6 for Packs You May Like, 

NOTE: F2 takes you to Build mode, instead of Buy mode, the first time it's used after loading a save, so press it twice.