How to connect poplogin with JomSocial?

Hello,

We use JomSocial as community builder and I don't see that the poplogin seem to support actual logging in to the community.

When I click it, the first dialogue box opens but when I try to click something it just disappears without anything happening.

Also, the pre-text, i.e. Login, displays correctly but the post-text, i,e, Logout, doesn't. It's instead visible just above the button.

Bests Suzanne