Hi all,
Update: After manually updating the Emerges to the new 10017 software, none of my iOS devices would log into the B&O app, except the one that I used to carry out the updates.
I fixed that my taking the phones to another wi-fi network and opening the app, then bringing them back home and they were then able to log in.
I guess this may be an issue with the corrupted log files from the 10015 software, as mentioned above by B&O. Hope this may be helpful.
Kind regards, Steve.