I’ve purchased your plugin but I cannot receive and send mails with it.
I use GMAIL Smtp plugin (https://wordpress.org/plugins/gmail-smtp/) to send mails using a gsuite account. Mails are sent using an app created in gsuite, not using regular SMTP access.
I used contactform 7 and ninja forms and they send mails without problem. I tried to search a solution at the forum and reading the different articles related to it at your site but I couldn’t solve it.