Hi @Bolli, welcome to the forum 
Do you have access to a web interface for your vehicle? If so, is it the BlueOS one (http://blueos.local), or the old Companion Software one (http://192.168.2.2:2770)?
If you’re not already using BlueOS I recommend you switch to it, especially if you’re just starting out. Our old Companion software is no longer being developed, so better to start with the new and improved one if possible, both for the features and for future updates and extensibility
If you’re on the Companion Software and want to try out that connection first, you should hopefully be able to connect to your wifi from the Network page.