What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
I'm not certain the form you provided is not accessible as I just preview it in my browsers. Also there is no problem similar to EU happening in States. At least no one reported such problem to us yet.
The form URL you provided - https://form.jotform.com/51184112757150 is also associated with another account.