Issue switching payment Methods

[wbyers]

We're running into a peculiar issue with coupons and the way they interact with the payment methods.
You see we have two payment methods we use: The first is Credit/Debit Card and the second is Free.

When an Order is given a 100% discount through a coupon the payment method switch that should happen, the one from Credit/Debit to Free seems to fail instead, displaying "We are sorry, no payment method matches the characteristics of your order. Please.". If the coupon code is removed it becomes possible to actually pay using the Credit/Debit card payment method. If the order was free, to begin with with a product price of 0. The switch works as expected and the free payment method is used.

This occurs with Virtuemart  3.6.010113, Joomla 3.9.11, and Awocoupon 3.5.7.1

[saraparker]

The payments are regularly being failed,may i know what is the reason behind this.