Help with Remote Access error

“Remote Access: Not available outside your network”

I’ve been having this issue for the longest time and after reading all the troubleshooting steps provided on the Help pages I am still unable to resolve this issue.

Is it possible to receive help for my specific situation and current set-up? I’d really appreciate it!

I am currently using Plex for Mac. The server: AirPort Time Capsule 802.11n (4th Generation).

I can provide more information, if needed.

Thanks in advance.