Disconnected - Failed to connect to instance

Yesterday, while I was doing Harvest farming to complete my challenges, I noticed that sometimes PoE wouldn’t let me open my maps. Later on, I started getting random disconnects here and there, until I couldn’t even enter my hideout anymore. Since none of the usual quick fixes worked, I figured it was either a server issue or my provider acting up again, so I went to bed.

Today I’m still encountering the same problem. I can log into my character and stand in the Karui Shores (at least most of the time), but I can’t enter my hideout or Kingsmarch.

I’ve already reset my router, tried all the usual CMD commands, reinstalled the game, used the CTRL + new instance thingy and changed my gateway. Nothing has helped so far.

The only thing I can connect this to is that I entered a map a friend was in, who is using Telekom and also mentioned having connection errors.

Also I'm from Germany, if thats relevant.

Does anyone know what the root of the problem could be?

Thanks in advance~

*Edit

Works again. Don't know why honestly.

*Edit 2

I think it might have something to do with harvest-related items, since it started working again the moment I stashed all the harvest items I had accumulated throughout the past maps.