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.
I see that there are dots mentioned for the extensions in the file type allowed which is causing the issue.
Please remove the dots for the extensions and leave them as eps, tif, tiff so that it should accept these files also.
Hope this information helps!