Issue removing device from Sky Go

I am trying to remove an old iPhone from my Sky Go TV device. I have tried via my new phone via my iPad and also via the sky app on the TV however I do not have the option to remove my old phone.

I have looked it up and it says to go into the settings on the sky app click on managed devices and then just click on the device you want to remove however when I click on the device to be removed nothing happens. I used to have this facility but since you have updated the app, this is no longer available. Anybody else having this issue?