I want to access FOP2 form outside of the network. I have forwarded the port to the FreePBX and I can access FOP2 from the browser from outside of the network but it does not fully load

I'm using the URL like this http://phone.domain.ca:12808/fop2/

I get the attached screen but it never fully loads and gets to "System is not available right now"

Accessing FOB2 on the local networks works fine