Communities chat error (code 319803)

Hello, I can’t use or read the chat from most of the communities since 4-5 days. I’ve an error "You have already entered community chat (code 319803)” when I click the “message” or “join chat” buttons. In my chat, I don’t have the option to speak in these channels nor see the messages.

I haven’t found any fix on this forum or google for it. I tried many things myself but nothing fixes it:

  1. Leave community & rejoin
  2. Shutdown game+launcher & restart
  3. Leave all communities, then shutdown game+launcher & restart
  4. Shutdown game, log on another region, use communities there, then retry on US
  5. Make another bnet account, launch d3 trial version here, then log back to my main account
  6. Repair game
  7. Reinstall game
  8. Change game to another langage, then back to english

How can I fix that ?? I’m almost doomed to solo play because I can’t use the communities where most players are.

Also I read there is a d3 account rollback feature you can use 3x, would it solve the bug to rollback to some days ago ?