@alex – Hmm interesting. It seems as though the_content is being replaced entirely.
Your popups should contain a div with class popmake-content. Are you filtering get_the_popup_content? Or removing filters?
If not then another plugin is filter the_content excessively similar to bbpress.
@alex – any luck? Would be glad to help track it down.
@Alex- I am closing this due to inactivity. If you still have the same issue feel free to respond here and I will be glad to assist you further.
Spent hours why there is no close button in some cases.
I changed the popup name to lowercase and all is ok.
Hmm that doesn’t make any since to me. The Name field is the_title field renamed.
It is not used in any way other than to identify the popup to an admin. The ID # is used everywhere.
Generally the close button is missing due to filters being applied to the_content causing issues.