This is the same issue for both of our IOS devices. We can stream, play online, shop and just about everything but get Spotify to function fully. We've re-down loaded ap's for both devices, reset our connections and both devices. With no luck what so ever resolving the issue.
Solved! Go to Solution.
Figured out what's going on...
Currently I've the Router set to limit Wi-Fi access to previously known Wi-Fi devices. From what I understand, it performs a MAC address cross-check against each joining device. All unknown devices that attempt to join will fail despite having the correct Wi-Fi password.
Note: This is a security feature avalible with Fritz-Box to prevent unanutherized individuals from sniffing the Wi-Fi and connecting for free. Works just fine with everything but Spotify thus far.
Beyond all of that, It seams that Spotifiy maybe opening up a 2nd port or connection throught the same device. This is despite the fact the device has already connected to the Wi-Fi network. Why this is being done is unknown but one could surmise that allot of this back-door traffic maybe unauthorized tracking data.