It's not possible to help you if you don't give a precise description of the problem. You don't say:
- Which scenery you are referring to: default or 3rd party ?
- If it's a 3rd party, who made it ?
- Does it have jetways ?
- How jetways are made ? Using the default CTRL+J system, using SODE, or static ?
- Does the airport have parking spot in the open ? If yes, do passengers works there ( with stairs and a bus ) ?