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 don't see any issue at our end.
You can give a try using your own SMTP settings for the sender email: https://www.jotform.com/help/244-How-to-Setup-SMTP-for-a-Form
Please observe your email activity from here on. You may also check your email activity to see the status of the email deliveries from your forms by following this guide: https://www.jotform.com/help/293-How-to-View-All-Your-Form-Email-History
FTP Slowness might be a temporary issue. Please check again and let us know if the issue continues and we will investigate further.