@Kaimen I am having a similar experience. On Wednesday my games started working Again on all platforms. As I mentioned before, this happened to my account back in December. I’ve asked tech support to leave the ticket open this time to see if they can determine the issue. While having the issue my games would not work on any network or device that I tried. Both times happened, the lasted for a little over a week. At any rate, I’m glad it is working again in time for me to try Gylt and Metro Exodus.
@Kaimen : Perhaps it was just the Stadia infrastructure that was at fault in this particular instance if it has just started working without any changes on your side being made.
Hopefully you won't have any further interruption.