Ignore the brief green status. That’s just Plex displaying the green indicator while testing the status.
You just need one… if you’re having trouble, I strongly recommend going with a manual port forward.
Also, verify the forward is working!! You can do that using a service like canyouseeme.org — that’s also helpful to confirm the public IP recognized matches the WAN IP of your router and the public IP seen in the Plex remote access settings.
There’s also a guide with some more details on how to troubleshoot remote access issues.