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.
If your form is opened / shared over HTTPS then you should have your background image on HTTPS server as well. The reason is that HTTPS is considered as secure if no data is loaded from it through HTTP.
So if you add a background image that is loaded over HTTP it is very likely that the browser will decide to disable the same for you if you open your form over HTTPS.
We will help you with the link on your other ticket here: https://www.jotform.com/answers/907909