Unable to set up my billing or prepay: "Error during billing setup"

[En_Tropie]

Project ID: project-114db743-78de-4291-9..

Billing Account ID: 01FB9D-9EFFE5-CE1D..

Issue: Receiving “Error during billing setup” message when clicking “Set up prepay” or any “Activate billing” or “Set up billing” button or link.