Hi David,
Thanks for your reply. I have made a new reCaptcha connection for my domain on the Google page with a version 3, because version 2 is not working with the integration in CF7. No my problem is resolved. In my opinion the settings were already in place, but anyway… it is working.
And, the form submits in Google Chrome snd Safari. I think your issue could also be caused by settings in the mail tab or in the reCaptcha integration.
What is your domain?