Spotify Connect keeps disconneting

[SteCoNi]

Plan

Premium

Country

Denmark

Device

Desktop and IPhone

Operating System

Windows 10, IOS 10

My Question or Issue

When playing from my desktop or IPhone, Spotify disconnects and disappears from availible devices after a few minutes. If i leave it, it automatically connects within a few minutes and starts playing again and then it starts all over again.

It all started when i got a new internet provider and a new router.

I have tried a factory reset on the reciever which is a Denon AVR-X2100W and i have tried to reset my router, but no changes at all.

Please help, i'm going nuts.