Offline Music not working in Garageband and DjayPro

Hi,

I have a strange issue with offline music on my iPAD. Initially I found that error in Djay Pro where some playlists are shorter than on my Mac.

Initial Situation: Playlists are fully downloaded on my iPad and offline available in Music-app. All music is purchased, the 2 working songs via MAC, the 2 not working songs via iPhone, Lossless quality and Dolby Atmos are deactivated before the download on my iPad.

Now the "challenge": If I turn off wifi, my test-Playlist is available in Musik (4 Tracks) but not fully in Djay, Garageband and recordBox. Within these apps, I only have access to 2 out of the 4 tracks. In Djay only 2 are shown, in Garageband and Recordbox 4 visible, but 2 greyed out. Recordbox send a failure message that the file might be corrupted or in an incompatible file formate. Does anyone do have a hint what might be wrong here?

I'm using:

iPad Pro M4 13"

IPad OS 26.1

4 Tracks, here is what my MAC says:

1 purchased AAC -> working offline on iPad

2 purchased m4a -> working offline on my iPad in music, not working offline on iPad in Djay, recordbox, garageband

3 purchased m4a -> -> working offline on my iPad in music, not working offline on iPad in Djay, recordbox, garageband

4 matched AAC -> working on my iPad

Thanks in advance!!

Best regards,

Steffen