Being able to process payments without any issues is our goal for our clients, @ptcs,

Normally, the error when processing a payment comes up when a transaction is declined. However, if you get the same message on every card you process payment for, I recommend contacting our Support Team to report this.

Our team will create an investigation ticket for our engineers to review. To contact us, click the following link: Contact Payments Support

In the meantime, follow the suggestions on the thread and see if it works for you.

We appreciate your patience while we're looking into this. Kindly update this thread on how things are going so far. I want to make sure this is taken care of.  I'll be right here if you need further help too.