on 31-03-2015 07:29
Are you saying as a pay monthly customer your existing phone number is not showing under products and services?
If so please check again later on today, you may find the website/or app has updated itself.
If nothing is showing when you check again you need to contact customer services
on 31-03-2015 08:16
If you have made any recent changes, you may have a new login.
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone 8+ (EE)
on 31-03-2015 12:46
Customer service will confirm your log in details especially if there has been a recent change such as upgrade or change from P&G. There was a similar problem on here recently where O2 had set up the account with different sign in details.