MT app GPS problem

In the meshtastic app I want to use the internal GPS signal from my smartphone. When i press the settings button a popup window appears with the message turn your GPS to very high in your android setting. However, when I turn the GPS on or off, the same message always appears. I have activated the authorisation but it seems that the app does not use the GPS signal and can not pass it to the ttgo Laura v1 device. I use the software version 1.1.8.