Hi, I am unable to view images on the server through the "Browse server" button when editing an item -> Item image. All I get is a popup saying

K2 v2.7.0 | Copyright © 2006-2016 JoomlaWorks Ltd.

and nothing else.

Yes, K2 2.7.0 in question, and Joomla 3.6.3 .

What could be wrong?

Thanks,
Benjamin

Can you update to K2's latest version or even better the 2.7.2 DEV version?
github.com/getk2/k2