Submission Button Not Working

My clients and I made multiple attempts submitting forms from different devices on different networks. Submission button changes from "Submit" to "Please Wait", but does not load. Refreshing page or backing out of form only deletes information. Forms are not being received to JotForm account as well. 

Have you tried making a submission on your end? Does it work? 

Please see if the solution below helps.

I see that you've embedded the form using the codes below:

Can you try updating the value of sandbox shown on the image above to "allow-forms allow-scripts"? Like this:

sandbox="allow-forms allow-scripts"

Please do get back to us with the result. Thank you.