Umberto - I'm getting a different issue lately. Says boarding now and even boarding complete, but I don't see any passengers.
As explained so many times already, in order for passengers to be seen, if there's a jetway:
- The jetway must have been detected by GSX and must have docked.
- In order to be detected, if you are on a 3rd party airport, you MUST Disable it with the GSX Config panel, because the jetway replacement files are only meant to be used to replace jetways on default airports, otherwise jetways won't work and won't be detected.
- Assuming the jetway is detected, it must dock to the airplane.
If none of these conditions are satisfied, the passenger boarding will be simulated, going faster with no visible passengers.