web direct in fms13

[dysong3]

I have a setup with fms13 running on a network that is using an Airport Extreme as router, wifi and firewall.  It has worked perfectly for years.  However it started playing up recently so I tried to setup a new configuration for the Airport Extreme where I opened all the ports that I thought needed to be open for FMS13 to work : 80, 443, 5003, 389.  What is weird is that if I install the new setup in the Airport Extreme web direct does not work. I know that it actually functioning in FMS as I can test it locally.  If I install the old setup in the Airport Extreme web direct does work, however after a few minutes the Airport Extreme becomes inaccessible, and I fear unreliable, as you can see in the attached image.  Would someone know what I am missing here?