Advice for "Cannot purchase gems" issues


As I am not the only one who had that problem and I have not seen the solution been posted anywhere else, I hope you land here to find this:

  1. Uninstall the bnet app through Control Panel
  2. Go to Start->Search and type %APPDATA%
  3. Delete the Battle[.]net, Blizzard, and Blizzard Entertainment folders. If you don’t have all 3, just delete the ones you have. (same for AppData/Local)
  4. Repeat steps 2-3 with the following locations: %TEMP% , %LOCALAPPDATA% and %PROGRAMDATA%
  5. Download and install the latest version of the battle[.]net app

Credit goes to Game Master Poklatharne who gave me these steps in a bug ticket.