Let me firstly say that I do not have an issue with neither the application or the call link as since my tariff refreshed for my 4g sim a couple of months ago I found both to work.
I'd like to point out that the application (account app) should work for all under 3 and 4g, however if anyone has recently upgraded their sim card from 3 to 4g then you should find that the application will work, but I'm going to explain why there may be issues for some people.
If you are connected to a wifi in a shop for instance it then depends on how they've set up their security ports as you may still find that you will receive the Ooops message if they (the shop) haven't set it up correctly, it should always work on your home virgin hub if you have one that is, but like I say when out and about there could be issues, explaining further, the my account app works for me, but sometimes I'll receive the Whooops message if I'm connected to an improperly set up wifi hub/router in a cafe (Waterstones) for example, but when home it works on my virgin wifi and on 4g, you have to accept cookies first of course on 4g then go back to Wi-Fi and all should be fine.
Definitely delete cache on browser as per mods instructions first.
I have cleared my cache and still get the same error message I was getting before. I am logging in on a Windows 10 laptop and get the same error page as Lil'Squabbit posted a few hours ago. I have been getting this for several weeks now.
I think it's only for the case where 2 of my mobile numbers are on the same account number. I have 6 mobile numbers and god knows why they merged 2 onto 1 account. My other phones are on their own account.
Thank you so much for your feedback on this, I've been advised today that due to the posts made here stating that the issue is ongoing that the development team are now continuing to work on this fault.
I also enquired whether the "Fix" that was deployed on Friday evening should've restored the mobile app, however this was for the online web version only - the App team also continue to work on the fault.
Thank you so much for your patience, and apologies once more.