Hello, maybe the app is not installed properly. The Bluetooth is not on! It worked immediately for me.

Hello
I recommend you watch the following video: https://www.youtube.com/watch
I personally never use the app. I did it at the very beginning to see what the app offers. It should always connect automatically after installation, as in the video. As long as the scooter is on and the scooter is selected in the mobile phone (Bluetooth should then be switched on automatically).
Hope it works.
Greetings