Error 803, I literally cannot play.

[Nek]

I entered a sit&go recently and accidentally closed the game while matchmaking and now every time I start the game it shows me a pop stating : "Error 803" "User cannot join game, buy-in invalid". This error literally does not permit me to play the game, I have uninstalled and checked integrity of game files and nothing has worked...

[Colin Rogers]

same error for me

[SmurFIK]

The same mistake. Tell me what to do?

[PAW]

Is it solved? I'm getting same error right now...

Okay so after night (like ~7-8 hours) it dissapeared by itself I guess.