Here is more info: https://forums.digitalpoint.com/threads/ajax-ie-blank-response.2749751/ I'm willing to pay for fix.
Have you tried what was suggested in the other thread? Here is a guide if you don't know how to clear the browser cache: https://kb.wisc.edu/page.php?id=15141
you also need to prevent your form submission. $( "form" ).submit(function( event ) { event.preventDefault(); });