On Reddit someone from CH (https://www.reddit.com/user/DerGRAFder13/) had same issue. https://www.reddit.com/r/VFR/comments/1197jdy/got_the_new_ride/
Someone else mentioned, as you just did, they were restricted for new riders (A2).
I don't know how he resolved the issue, but he mentioned he spoke to Gerhard at https://www.thurn-motorsport.de/ who helped.
You may want to reach out to the Reddit user or Gerhard for clarification.
Good luck