Reply To: Test Server Support

Hello,

Please remove all your customization.

Please add this code to the Theme Settings > Custom CSS > Global:

.checkout_coupon {
    padding: 30px 25px 10px 25px;
    text-align: center;
    border: 2px dashed #ddd;
    max-width: 450px;
    display:block!important;
}
.showcoupon{
    display:none;
}

Best Regards