Adobe Digitial editions can't find ereader

Hello,

I bought a Kobo Aura edition 2 e-reader. I downloaded Adobe Digital editions and authorized it with my pc.

When I connect the ereader to my pc, this works fine. Only ADE can not find my ereader and does not show it under 'devices/apparaten'.

Like this I can not authorize ADE to my ereader.  I searched for topics on this forum and online, but no response seems to help. This is quite frustrating since I wont be able to use my ereader for PDF's or other important channels to read ebooks.

Could you please help me out with this problem?

Thank you already a lot in advance!

Best regards, Milou