Hi ​@Dantgordon 

Could you please try manually connecting to a network called Turk Telekom, as this is one of our network partners in Turkey?

You can do this by following the steps below, depending on the device you have.

Apple: 

Press Settings.
Press Mobile Service.
Press Network Selection.
Press the indicator next to "Automatic" to turn automatic network selection on or off.
If you turn off the function, press the required network which will be Turk Telekom.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
Wait few minutes and try test services again.

Andriod:

Swipe down on the main screen to reveal the notifications panel
Tap the settings icon
Tap Connections
Tap Mobile networks
Tap the switch button to turn Select automatically off
Select iD Turk Telekom.
Wait few minutes and try test services again.

Michael Z