I don’t get it it why won’t it let me do air traffic control some tell how to get it plz
You need a live subscription (In-app purchase) to go online and fly and/or control.
More information please
Make sure you have an active subscription in order to access this feature
You can control in Training Server. However, you can’t control in Expert Server unless you are an IFATC
Infinite Flight ATC Recruiting
Like @Panther said, you need a Live subscription to be an ATC. If you have a subscription restart the app, restart device, delete and reinstall app, communicate with mods and staff for further help.
Make sure you have a valid Live subscription :)