Same issue, have never been able to logon, not once, recurring issues. Doesn't matter what browser, what device, never works. When you phone in get sent to overseas staff who try to be helpful but are just time burglars, nothing ever gets solved. They then ring you back at random times that you don't answer and leave a voice message to call a number that goes to an inane automated message, nothing to do with technical support. Also, their staff cannot tell you where to direct your external aerial to a mast, everyone you speak to picks a different direction. Last time I was told it was solved. Rang in, took 35 minutes to speak to an inept junior who seemed not to believe that when I type in three.co.uk and click login it resolves to https://new.three.co.uk/account/login#/; oh that doesn't sound right... So there are various websites that I cannot access, but cannot login to tweak settings. 20 years of broadband services from various companies and never once have I not been able to login to the account website. Locked in to a 2 year contract now, can't wait to leave, no wonder it was cheap, except it wasn't by the time I forked out £200 for the external aerial as the 4g hub was so ineffective and various powerlines as the range is so weak around the house, probably works fine if you live in a small flat.
