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.
You can add Jotform to your white list specifically the URL blocked by your security software. Jotform is most likely on their block list due to phishing reasons that's why it is showing that error. We assure you that Jotform is safe and has no harm with anything. We consider that error a false alarm.
Jotform is the easiest form builder, unfortunately some abusive users are taking this advantage for their illegal activities. However, we have an active anti-phishing tool that automatically suspend illegal forms.
Hope this clears your question. Thanks!