Just spotted this on 3's website:
Important information:
We’ll be doing some system updates to improve our services between 18:00 on 9 December and 12:00 on 10 December.
During that time, you’ll still be able to call, text, and use data as normal. But you won’t be able to log into your account, top up, or request any switching information, such as a PAC or STAC.
After 12:00 on 10 December, you’ll be able to use all services as normal.
