Hey.. Thanks for the reply.
Im not embedding the iFrame code in the default WordPress “post” area. I think my theme has a feature underneath the post area(in edit post page) called “single post options” where there is a separate box for pasting iFrame embed codes.
The plugin isnt able to find a thumbnail if I use that section to embed.
Alternatively when I try the normal post area to paste the embed code the plugin is able to find it without issues.
Is there a way for the plugin to detect if the non-default embedding method is used?
https://themeforest.net/item/gonzo-clean-responsive-wp-magazine/2415788
This is my theme.
Thanks