Problems with client/game

Hello there, I'm having some trouble with the client and in game. I just played a game in which at about 40 mins I disconnected. It helped to swap from cable internet to WiFi. However, after the game I tried to get into another through WiFi, but I never loaded into the game and instead the client just logged me out. Now I am either facing "an unexpected error" when I try to log in, or the client disconnects after 2 minutes in. This applies for cable and WiFi. Also tried repairing the client. I hope someone has a solution, because this is quite annoying to deal with.
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