Coupon Code: Price does not change in IE8

This post is an addendum to my immediately previous post regarding a form with a "Coupon Code" not working in IE but working in Chrome and FireFox...

I cloned the form and eliminated the "Coupon Code" entirely, posted online at http://www.e-letterhead.com/realty/vbc/order.html and it DOES work in IE8 sooooooo, there is definitely a problem in IE when a "Coupon Code" field is added... it accepts correct input and returns a "Valid Code" message under input field but does NOT update price, either where referenced in the Product field NOR on the PayPal page it directs to... only direct PayPal page with INCORRECT amount AFTER an ERROR message is returned on Form.  If you click out of pop-up error message, EVENTUALLY (after "thinking" a long time), one is redirected to PayPal page with INCORRECT dollar amount to pay (Coupon NOT applied).

Online form WITH Coupon Code located at http://www.e-letterhead.com/realty/vbc/ordernow.html

Hello tofecjamal,

I did check your web page in IE 8 (developer tools) and I ma unable to replicate the issue you are having. The coupon code feature works fine in IE8 and updates the price. Please check the screenshot below:

I would suggest you to please test your form once again and get back to us if the issue persists. You may also like to share a screenshot of the issue and we will take a look. The following guide should help you upload image in your forum post:  https://www.jotform.com/answers/277033 

Thank you!