Well I could be wrong, but it seems that your settings are to show one image only!
Either user can set this to 1 or it is set as default:
Go to section:User Control Panel Profile Addon Settings
There make sure that: Image Count is set to 13
13 is good, because that gives you 1 big image and 12 thumbnails
12 being a magic number that will display evenly no matter what the width of your browser is..
12 on 1 row or
6 on 2 rows or
4 on 3 rows or
3 on 4 rows etc...
and set Highlight Image Maxsize to 400
setting it to 400 will make all images on all profiles the same size.
Do not save yet!!!
scroll up a little bit, and set:
Make Profile Settings below default for ALL users and new users to YES
And now save!
This will reset all user profiles to those settings. Of course the user himself can change that in his profile settings if you have Allow users to modify their Profile-Settings set to yes.
I'm gone for 24 hours from now on, and will not be able to respond before I am back...