Connection issues

[VoiceMemo]

In this thread, I've already pointed out multiple times, what the problem probably is - and where the troubleshooting should start. VPN is a good workaround for everyone obviously, but it still has nothing to do with DNS.

To be clear: If I use the same DNS Servers on my VPN connection that I use on my ISP direct connection, the problem should stay if DNS was the issue. But it isn't staying. I can use the same DNS Servers on VPN and it's fine.

REGARDLESS IF VPN IS working then it narrows it down to your ISP. They have either changed something or something broke, so it's up to you to contact your ISP and have them do diagnostics to find what is the issue

Have you tried tracerouting it with and without VPN to SE's servers?