Spotify Connect no longer works on ipod

[Tomp94]

I am using an ipod touch with ios 6.1.6. I use this connected to my Cd player dock.

I used to be able to use another device such as my android phone or other (up to date) ipod using the connect function, however I can't do this any more. 

All devices work fine with Spotify, and I can see my phone on new ipod, and vice versa, but it doesn't work on my older ipod toch anymore. Why? 

All devices are connected to the same WiFi. 

I have reset ipod and reinstalled spotify. 

Please help! 

Thanks 

[Tomp94]

Anyone?