I'd move this, but then it'd be in the archive and never seen again. So might as well leave it here.
OT: What? Who ever heard of a forum where you could not move the topic to a new board and have it visible? What forum is Boonex using because I can move topics with Orca.
I asked about the version because newer versions of Dolphin allows one to use first name and last name. I don't use that on my sites so I don't know. Also, one can set the Profile Album to {nickname}'s photos in the admin. From the screenshot it looks as if the user is using 7.0.x/9. I don't have an installation of 7.0.x.
If you read the OP you will see where the question is how to set it to use the nickname instead of full name. Look in the admin, modules, photos, settings and see if there is an entry for setting the name of the profile photo album. I don't know where to look exactly because the admin control panel changed when 7.1.x was released.