we are facing a following trouble with AWO coupons.
1) In Google Chrome browser
It works ok just in one case it gets broken.
If I fill the order and set online payment - then when I get back from payment gate into the website to check the order again before paying, the Coupon title gets lost from order summary and the total price is now without the discount.
2) In Mozilla
Here the coupon gets lost directly in the order form when I try to fill the address and other stuff - just when the page is changed via ajax due to changes in the form.
On the site is Joomla 3.8.1 + VM 3.0.12 + OnePageCheckout 2.0.353.250118
However when I disable OnePageCheckout plugin to keep standard checkout form, then when I try to set the Shipment or Payment method and the page reloads, the coupon also gets lost.
Thank you for help, it is quite urget issue as the marketing campaing for the client's eshop starts in February. If needed I can provide access to the site for checking.
Have a nice day,
Pavel