Thanks Maksym! We have opened a priority ticket. We also tried deleting and adding a new pro gallery as well as creating new galleries on different pages and different sites. We’ve also tried different browsers and Macs. In addition, we tried on other existing Pro Galleries on different sites. In all these cases we experienced the same behavior. Nothing happens when you click to add. This was working fine prior to last week.
There appears to be something wrong with our account or with the ProGalleries across the board. We are waiting to hear back from support.
Thanks again!