Single player does not work since day 1 of launch. When I create a Classic or Pre RotW single player character it works . But characters made for the RotW update all it says it is a black and gold screen that says “Failed to Join Game” as if it was a multiplayer game or something
Help please
No idea what your problem is; RotW works perfect in Singleplayer.
Perhaps you should repair your installation like other players facing odd behaviors.
Sounds like your RotW shared stash is corrupted, you need to go to C:\Users\yourusername\Saved Games\Diablo II Resurrected and delete the ModernSharedStashSoftcoreV2.d2i (or hardcore if you play hardcore) file or replace it with a backup if you have any.