Can't manage images in my Album

Hello

I am a bit lost with my images management.
I should do a wrong configuration somewhere ...

I can not update the logo or the banner of a Group.
When I click on the logo, a black window is displayed. (see attached capture)

Also, I thought that all logo pictures I used when I created all my Groups where saved in an album.
Then I can re-use some logo pictures for others Group.
Maybe I am wrong.

Can you help pls.

KR
Henri