I wonder if they are using the same backend servers as old client or if that got a rewrite as well and players will be in separate environments. I played a couple months of evenings of D2 during the pandemic: the online experience was quite a mess. Got temp bans several times for switching characters soon after login. Rampant botting to the point that people made bot services that would give you waypoints upon reques…
Temp bans are there to stop bots. But only legit players suffer, bots just wait a few seconds.