Remote Access Continuously Disables

PMS will show your remote access status as „green“ while it’s checking that status. For that reason, you should consider the remote access setup isn’t working at all.

Did you already have a look at the related troubleshooting support article?

https://support.plex.tv/articles/200931138-troubleshooting-remote-access/

There’s also a guide with some more details on how to troubleshoot remote access issues.