Ohhh so sorry I’m having other kind of issues with other plugin XD so I mixed up both. Events Manager It’s actually a free plugin (I thought I had the Pro version): https://wordpress.org/plugins/events-manager/
By the way I don’t know if is just me but I receive the email notice (“[Support] Re: [Events Manager Pro 5.6.x and Related Post Pro 1.5]”) without parsing the html:
<p>Hi!</p>
<p>You have a new reply on your ticket! You can view it here: https://wp-dreams.com/forums/topic/events-manager-pro-5-6-x-and-related-post-pro-1-5/#post-11370
<br>
Please do not reply to this email!</p>
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<p>Best regards,<br>
wp-dreams.com</p>