Problem setting up "Sending Form Data to Email"

Hi All, I am trying to create a simple form to send data by email. I am getting 400 Error and 405 Error. Can you please take a look at
https://daviesandgray.co.uk/bookings3.php
It contains a form with reCaptcha and Dropzone.

Errors…
HTTP method GET is not supported by this URL : Error 405
and
400 Bad Request : “recaptcha”: “Recaptcha check failed.”

I am sure I have forgotten to do something.

Here are some screenshots of the Wappler stuff

image.png409×887 21.5 KB

image.png704×954 47.7 KB

image.png337×805 11.8 KB

Cheers
Neil