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 tried uploading pictures using the form cover and it showed up fine. It was uploaded successfully.
I would recommend you to log out from JotForm and then clear your browser cache. After that, you need to close and re-open the browser then you need to sign back in. Please try to upload a picture again in the form cover. If it is still the same, try doing it on another browser.
What type (jpg, gif, png) of image are you trying to upload?
Hope this works. Let us know if it is still not working.