I can log into the games and see my character list after I select a character it shows a waiting to start screen which can take up to two minutes after that the screen goes black and after a few minutes the game closes.
This has started happening since version 1.4 going live.
Also this version of Diablo is the worst from a reliability point of view.
Finally please make the game playable offline. I have no interest in the seasons and PVP. One of the main attractions of Diablo has been the offline single player mode. It would stop all the disconnections from server that happen regularly, usually at least once per session of play.