I am not sure if this will help. I tried doing "inspect element" using Chrome for the delete feature. When I tried the delete function, the following would appear under the "network" tab of "inspect element":
Status/Text: 404 Not Found
Initiator: load-scripts.php:2 Script
Size: 499 B 335 B
Time: 158 ms 156 ms
I am guessing that there must be a problem with the coding, but I haven't modified it. I have no idea if this would affect things, but I do have a "child theme" in place though it has nothing to do with this plug-in. Can anyone help? Thanks.