Luckily I got a guy who at least knew how I was feeling as he owned a PlayStation, too.
So I called up the IP today, good old Vodafone, got a FritzBox from their Kabel Deutschland subsidiary for the better part of a decade. Also, I think of this as only a temporary solution as it still doesn‘t tackle the root of the issue nor the fact that this happened so suddenly. Sure, portforwarding solves that but I‘ll have to activate and deactivate some of those depending on the console I wanna play online on. Oh, if only the weak Wi-Fi was my problem! I‘ve been on and off working to fix the fact the router I received at the beginning of August pretty much blocks all online gaming and that not even since I got it but since the beginning of October, from one hour to the next.
