See here in lies your issue. I know you like this feature ubb gallery has but simply put its not a gallery. A little side feature of the forum with one feature does not make a gallery. I did notice that on there site. Its almost like they made a little side script that can show attachments together in a forum post and called it a gallery. Our product has tons of features. Something like this may be available in the future but for now it is not. It did not moved to the suggestions forum for the developer to look at but that is where this stands.