Hi Andrew.
You say yellow means unable to connect to port. Can i somehow test if it is possible in general to connect to that port? When i telnet on the machine the Chrome Browser is running to freepbx i get:
$ telnet -e q domain 8088
Telnet escape character is 'q'.
Trying nice.ip.addr...
Connected to domain.
Escape character is 'q'.
q
telnet> quit
Connection closed.