Can't checkout unless I remove coupon code from field

[eclipsemedia]

We created a coupon and it works by saying Coupon was applied. However when we click Confirm Order. It just refreshes the page over and over. Until we remove the code click "Confirm Order" we see a message "Checkout done, please confirm the order"
Please help

[jenkinhill]

What Joomla/VirtueMart versions?  Using a commercial template or third party checkout extension?  VM default coupon system or Awocoupon?

[eclipsemedia]

VirtueMart 3.8.4 10335
Joomla! 3.9.21

I disabled all outside extensions for virtuemart and I am using the default coupon system with Virtuemart. Thanks for your help in advanced

[GJC Web Design]

check the console for JS errors and/or any error returned from the post to confirm