My wordpress embed form is not submitting.

Hello! I just made a new form for the River Center account, and it isn't submitting when filled out. Let me know how to fix this, thanks!

Kindly edit the iframe embed code and replace the following:

sandbox="allow-scripts"

to

sandbox="allow-forms allow-scripts"

Here's an example screenshot on where to change this: 

I hope this helps. Let us know if you have any questions or if you need further assistance.