Battlefield won't connect to online servers.

Error code: 1:86001S:66003S:4688822970:0B

I've been playing normally for the past few months, when overnight, I suddenly couldn't access it anymore. Whenever I try to restart the game, it doesn't get past the part where it connects to online servers.

I've done all the resets and cache cleans possible. I installed and reinstalled both the EA App and Steam. I uninstalled and reinstalled the game, but nothing worked. I had been using Windows 10 Pro for some time, and I switched to 11 because I thought it might be due to Windows 10 no longer being supported, but that didn't solve the problem either. I reset my internet router, and nothing! I've given up and just want to somehow reset my credentials for accessing the online servers. 

I've checked the status of the game servers, and everything seems OK. The problem is definitely related to my account not being able to connect to the servers.

I look forward to your feedback.