Why Won't My Popup Work with TablePress?
As of Popup Maker version 1.8+ and TablePress version 1.9+, the following issue no longer appears to be a problem between the two plugins. If a problem does occur, and the solution below is not sufficient to resolve the problem, please submit a support ticket to Popup Maker.
The TablePress plugin is installed and active on your site, and a popup set on a link within a table does not display properly.
Edit your TablePress settings. Turn off that plugin's Use DataTables feature from the Edit Screen. Update the plugin and test the popup once again.