I think I have seen posts like this before as I think Sky Go Extra might need adding/resetting back on your account so to get you some help with this I have escalated your post to Sky who will be in touch with you sometime tomorrow regarding this via a blue/red chat bubble which will appear at the bottom of this page.
This link explains how this works:
https://community.sky.com/t5/Did-you-know/Escalating-a-post-to-a-Sky-expert/ba-p/3711147
When the chat bubble does appear you have 48 hours to respond or it will be automatically closed. This isn't a live chat so replies are not instant.