JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
In our end, the form builder and the website works fine. You can see here the status of the response time of Jotform.com here http://jotformstatus.com/.
I would like to suggest the following troubleshoots to see if it changes the loading time.
2. Check for browser's plugin or extension, there are times that these are blocking the form builder and making the website load slower.
3. Try using a different web browsers to see if there are changes in loading the website between them.
4. Check your web browsers if they are updated.
5. Check for your internet connection, there might be network issues.
I hope this helps. Let us know if you need more assistance on this.