Airplay missing after 2.729 update

I‘ve lost Airplay after updating to 2.729 from 2. 513.
Airplay was missing from either MacBookPro (pretty uptodate OsX) or iOs 12.4.1 „replay“.
Only change was Volumio update, no IOs nor OsX updates.
Switching to my other MicroSD with 2.513 setup from my other Raspi (both Raspi 3) restores Airplay.
What to do?
Best wishes & thanks!