Problem with scooter TGB X-LARGE 300

My motto scooter TGB X-LARGE300 is currently located at “CityRoller” in Stuttgart Möhringen. I had him picked up to have inspection and TÜV done… but couldn’t take him there himself because he just didn’t want to start. Unfortunately, I was told that no spark of ignition is coming and he doesn’t start. “CityRoller” also meant that they can’t do anything because they don’t come to corresponding spare parts. But he didn’t analyze it any further and couldn’t even tell me what exactly is needed… except that maybe smaller roller workshops could help with spare parts. So I’m eager to find people who know about it and can help me. I’m happy about every little message… many thanks to you in advance and love greetings from Gerlingen, Andreas