I noticed that connecting with mullvad (both in OpenVPN and Wireguard) to some servers such as Norway and Switzerland, the messages I send in chats on twitch (a streaming site) are not delivered. Trying without vpn or with a different vpn service I had no problems. Twitch appears to have blacklisted these IP. Could anything be done to fix it?
Most of Mullvad IPs are shadowbanned, but some do work if you have some time to find them. You can follow this guide I made a few months back if you use Firefox and Wireguard.