I changed the font to an existing systems font and the issue is resolved. I think perhaps some testing should be done by your team to make the Popup Maker plugin compatible with Essential Addons for Elementor since it has 2+ million installations.
Thank you so much for your help.
I’ve purged the cache, but still not working. I’ll send a message via Support Request.
Thanks!
Here is the link to the comparison screenshots:
https://imgur.com/a/QQ3xuFp
The top pic is with Popup Maker disabled.
Thanks for your prompt reply!