Cannot join game in same realm

I think Blizzard is already aware of this issue because it happens quite often over all platform.

Issue is that I cannot join some game which actually exists.
Message seems like there’s no such a game, but it is. (And additionally, I cannot join any game for a minute because of my failed game joining. Really?)
It happens even when I tried to join to my b-net friend’s game on PC, or my nintendo online fniend’s game in Switch.

This symptoms might be resolved if I re-connect D2R or my friend and I both re-connect D2R, but it is impossible to try when there is long login queue.

It is very annoying. I spent more than 30 min today to trade one item because of this issue.