@Ravensthorpe Is It the issue in this thread?
https://helpforum.sky.com/t5/Sky-Glass-Live/Last-few-days-technical-fault-with-channel-disney-plus-e...
If so read the marked answer and the last few pages for a potential workaround.
It may also be worth connecting via ethernet instead of WiFi. Many find ethernet gives a more stable connection. If you do connect via ethernet make sure WiFi is set to off in the settings. Also having Networked Standby set to On and Power Saving On seems to help.
