Contact form sends email fine, but no "email sent" notification shows on website for the submitter. The page hangs with the waiting animation spinning.
How can this be fixed?

recaptcha doesn't works
if you turned on, notification doesn't show, and message not will sent

Dear SanfordVet

We're sorry late.
Please send us the ftp account to check directly.

thanks

We are also now not receiving any emails from the sj_contact Ajax form either,nor is the success message showing.
Testing the email settings from Global Settings- everything is OK and we get the email.

Dear SanfordVet

Please configure your api key again prntscr.com/n7tfzx

thanks

reCAPTCHA is reconfigured with new site and secret keys as per your suggestion.
Still not getting either success massage or email from contact form.

Testing email configuration in Global Configurations confirms email settings are correct "This is a test mail sent using "SMTP". Your email settings are correct!"