Too Many Requests.Sorry! Rate limit exceeded. Try again later. !!

when someone try to submit my form he get this

Too Many Requests.Sorry! Rate limit exceeded. Try again later. !! 

what is the problem. i want to remove this option from my form

I have checked your form settings and they seem to be fine, I also cloned your form and was able to submit it without any problem on my end. 

I have however noticed you have already reached your submissions limit, you would need to either wait until the limit gets reset the first day of the next month (EST) or upgrade your account in case you want to continue receiving submissions. 

You could also complete the tasks under the get more section of your account so you get more submissions for free. 

https://www.jotform.com/myaccount/getMore 

I hope this helps.