E-book provider does not appear / wrong provider appears

[#1]

Hi there,

I recently purchased and e-pub e-book on Hofer Life. When trying to add and authenticate it on Adobe Digital Editions, only 'Pocket Book', but not Hofer Life showed up as an option to authenticate it with. Thus, I can't authenticate it. Why is the e-book provider not showing up?

Thanks in advance.

Best,

Felix