Spotify Connect with devices on iOS

[mr_raymand]

I'm using spotify connect for several years now and very happy with the concept of it. But the last few weeks, it's starting to get unstable.

I have a Yamaha AV Receiver and a Libratone Zipp Mini. Almost each day, my iphone 8 Plus doesn't discover one or even both devices. But when using Spotify on my MacBook, it always detects both devices. After using my macbook to connect, the devices also show up on my iPhone...

A long time I thought it would be an issue with my speakers but now I'm sure it has something to do with iOS and Spotify connect. I'm using iOS11, updated to the latest version.

 p.s. of course i'm connected to the same wifi network