Is there a cutoff for internet browsers that support JotForm?

I have a client who is having trouble accessing her personalized form. She says that the link does not let her into the site. I tried the link and it worked fine for me. I'm guessing this may be a browser problem-- what browsers support JotForm? 

JotForm generally supports all major browsers. We usually recommend our users to use Google Chrome or Firefox. You may see a few issues with old versions of Internet Explorer but should be working fine with latest versions. Please check with your client if they are able to access the form using some other browser.

Let us know if you need any further assistance. We will be happy to help.