@Paula221
Try signing out of the app then reboot your device and the sign back into the app.
If that doesn't work then try linking your Sky ID to your account, help on doing this can be found here:
https://www.sky.com/help/articles/sky-id-cant-access-all-my-services
__________________________________________________________________________________________
If someone has helped you then please click on the LIKES button in their post.
If you need help please provide as much information as you can
