Vulnerability?

If you have a specific issue you need resolved, you might want to use his direct contact form as he is more likely to respond to that.

https://www.gopiplus.com/work/contact/

Thanks @bretmiller

More info about this vulnerability here:

https://patchstack.com/database/vulnerability/email-posts-to-subscribers/wordpress-email-posts-to-subscribers-plugin-6-2-sql-injection?_a_id=431

Waiting for a patch, with thanks.