I had an email from Virgin Media saying we can use the 02 priority app, it wont accept my details, I've done the usual uninstall and reinstall and cleared cache, but it wont accept my phone number, the error I get is invalid auth token. Please advise

Ive been in contact with Virgin and they say there are issues in the BL2 area and the always will be, does anyone else have these issues? In fact, the customer services lady asked if there was a landline she could ring me on as it kept breaking up. I...