Sorry to hear that. I’d appreciate it if I could have a chance at looking at the problem before you review the plugin. I’ve had a fair number of cases where the issue was either a problem with expectations, understanding what the plugin is about or incompatibility with other plugins. (In your case, it sounds like the latter.)
I am personally on 4.4.1 and generate my own image wall using the shortcode below:
[image_wall image_sizes="medium , large" column_proportion_restrictions="2" move_to_end="true" open_links_in_new_window="true"]
And that works. I also tried with open_links_in_new_window=”false”, and that worked too.
