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I am not sure if I have understood your question correctly. Do you mean to say that when you submit form, it just says "Please wait..."?
I did test your embedded form which you have in your webpage and I am unable to replicate the issue you are having. I was able to submit your form successfully. Please check the screenshot below:
I would suggest you to try again and get back to us if the issue persists.
If you meant to ask something else, please explain your question a bit more in detail and we will surely help you.
We will wait for your response.