Hello FriedelXT,
I do not perfectly understand the latest post with exported files anyway, I think I've found a really stupid mistake in the app.
Please open settings > Guidance! > Advanced settings and uncheck "Notify on every route point" that will be probably enabled. By small copy&paste issue, I've by accident added this option on the incorrect place.
This setting has nothing to do with navigation, it's just my stupidity. It will be fixed in the next version, but let me know if this helped. Thanks and sorry for extra work and problems.