Apple Music/iTunes: Exceeded 100,000 limit but have 86,000 tracks in my mediathek

My iTunes says I can't add more Apple-Music-tracks to my iCloud mediathek because I've reached the 100,000 tracks limit but I'm using about 86,000 tracks locally (my own music) and 13,500 tracks from Apple Music. I recently contacted the Apple support but they can't help me yet. At the Apple.com-Website I found this information:

Access your music collection on all of your devices with Apple Music - Apple Support

You can have up to 100,000 songs in your music library. Songs that you buy or bought from the iTunes Store or added to Library using your Apple Music membership don't count against this limit.

Anyone here who has the same troubles? I'm very disappointed about the lazy support from Apple!