Hi, I’m really sorry for the issue you’ve experienced – you shouldn’t have to put up with losing access to your account for so long, or indeed at all.
We’ve now identified the cause and have a fix going out in the next app release (version 3.9.68) which should hopefully land by tomorrow.
I’ve put some more details about this in a post in another thread. In summary, although it’s getting harder for us to thoroughly test each release on iOS 12, we’re looking at making some improvements to our automated tests that should catch these kind of issues before we release each update. Where possible, we strongly recommend our customers update to the latest iOS version for the best app experience.
Thanks for your patience while we addressed this issue 