problem spotify connect ios

[rolfio]

Since the last update (version 8.5.17.713) Spotify Connect doesn't work anymore on any IOS devices in my home network.

Yes, I have installed the app again and I also have the last update for IOS..

Android devices are ok. 

Can anybody tell me what's wrong?

[rolfio]

My fault... I thought I had IOS 12.4, but not. So I first get 12.4 and then I report back...

[rolfio]

Hmmm... even with IOS 12.4 no Spotify Connect. Anyone an idea what this might be?