Only problem you might get is the resolution may keep trying to switch u til it finds a compatible one but you have switch to make it stick to source output
That's weird man
On hkc , if the system working on app, customer would get a notification "engineer here"
If system is set you can't access, if system unset you still get that notification , even with engineer access always you get internal bells locally and remotely until you press a key
So customer would hear something
Codes can't be viewed though
Reading what the op is saying again, he can use his system , just not on the app
He wants control over the app , which won't happen no matter what he does
So needs new installer
Plenty of installers on the enforcer etc so should be no problem op