Same outcome or the exact same configuration?
A lot relative to your remote access setup can change outside your control. Unless you’re having the exact same setup and configuration, it might be worth to move this in your own thread and start troubleshooting your particular issue.
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.