Hi ferglamanta,
It sounds like you’re describing two different issues, and so I’ll address each of those below:
Issue with reCAPTCHA
I took a look at the URL you shared, and it looks like reCAPTCHA’s code is being loaded twice on the page. With the double code, the will reCAPTCHA appear correctly but will displays a validation error when the form is submitted (the functionality is effectively broken).
There are a couple of options for next steps:
1) You could try to track down what’s generating the other reCAPTCHA code and, if possible, turn it off (it could be coming from your theme, or from another plugin).
2) You could try enabling No-Conflict Mode in WPForm’s reCAPTCHA settings (under WPForms > Settings > reCAPTCHA tab, here’s a screenshot: https://cloud.supportally.com/2z04132G3u2k). When enabled, this setting will remove any other occurrences of reCAPTCHA on pages where WPForms is used, and this will prevent conflict with the reCAPTCHA code in WPForms.
However, this No-Conflict Mode is an aggressive option and only recommended if nothing else on the page requires reCAPTCHA.
3) Another option is to turn off reCAPTCHA and use the free WordPress Zero Spam plugin instead. We have out of the box integration with that plugin. Simply install and activate, and all your WPForms are protected. Their honeypot technology is really good, and will allow you to disable reCAPTCHA and not ask your users for a captcha at all.
Issue with email delivery
If I’m understanding correctly, it sounds like you’ve set up an SMTP plugin with a Gmail/G Suite email address. That’s great, and an SMTP plugin is definitely the best way to fix email delivery issues.
If you’ve completed the setup for your SMTP plugin and the test email is successful (for WP Mail SMTP’s Google mailer option, this is covered in Step 3 in this tutorial) then you’re SMTP settings are good to go.
The next thing to check is the From Email in your form notifications. To do this, open the form builder and go to Settings > Notifications. The From Email here will need to be the same email used to set up the SMTP plugin.
Once this is all in place, your form emails should deliver successfully.
I hope this helps! ??