Guns don't fire on certain servers?

I was on the "VPAC" (?) server today, flying the E7. For some reason the guns did not fire. I exited and checked the bindings, redid them and rejoined the server. No joy. I exited the server and tried a single mission I'd made. The guns worked. I joined a different server and the guns worked. I then rejoined the first server and again the guns would not fire. In speaking with one of my flying mates I learned he had the same issue on the ACG campaign server, which I also fly. We both have in common flying the E7. He's told me the issue went away after some minor update, but prior to that he'd checked the in-game control settings and saw none 9f his bindings even though his Userconf.ini still had them there. All my bindings still showed in-game.
Thank you,
Flyby out

If you have your custom keybindings correctly set and saved there should be any problem on any server.
Try this.
Spawn in on the server of interest. Once spawned press " Esc " one time. Go to the options menu, then select " Controls " and then click on the " Load " tag-button and load your custom .ini file where you saved your custom keybindings. Click " Apply " and back to your aircraft.
As said if you have done all in the right way there should be no problems. ;)

:salute: