Thank you very much Nukak Asanansi.
I have discovered that there is a conflict with Google’s rcaptcha V3 plugin. If I deactivate rcaptcha V3 in the form it works correctly, but if it is activated it does not allow the submission to be made.
The problem is not with WP mail SMTP.
Any ideas on the problem with rcaptcha V3?
Thanks again.
Thanks for your answer. I found a bit late your information about how to publish the submission data in http://www.campbellhoffman.com/form-manager-faq/#publishing-submissions-as-posts
Regards.
