Are they still supporting this?

I have 2 iPads (you are supposed to be allowed 2 devices). Today spontaneously one of them announced it was remotely deactivated, log in again. So - tried to log in, it wont let me, wont let me deregister it so I can reregister it either. Absolutely no reason for this that I can think of. Cant look at material already on that device either. Not much of an inspiration to purchase content - cant read the content Ive already paid for.

HateNewApp about eBooks by Inkling, v4.0.1