Ground to tower

I was controlling EGKK when speedbird 405 changed to tower on his side but not on mine so he requested to takeoff but for me he was on ground I tried everything to contact him and tell him to takeoff but nothing worked.

Device: IPhone 6 on IOS 11

Were you having any internet connection issues?

If this was on the Training Server then who knows honestly. Not much we can do for you here as there’s minimal details available.

What details do you need

The thing is;

It’s hard to sit here and speculate about something that was.
We are however aware of a similar issues that have been reported before and are looking into it.

Ok, I’ll let you know if I find a resolution or if it happens again