For anyone coming upon this thread, the Formit form is now submitting and sending mail properly. This is what I think was the problem: There was some miscommunication between the Google Recaptcha account for the domain and the Recaptchv2 snippet installed on the site. Possibly one of the keys was bungled. What ended up working was:
- Uninstall and Remove the Recaptchav2 snippet
- Delete the Google Recaptcha account <-- important
- Test that the form sends w/out Recaptcha configured
- Make a new Google Recaptcha account
- Reinstall Recaptchav2 snippet
LOTS of cache clearing throughout the process.