When selecting Quickbooks for the payment option of DT Register, it allows a user to enter credit card information, but when the payment is submitted, users are given an error:
"The redirect_uri query parameter value is invalid."
I have checked with QuickBooks, and have ensured that I am using production keys, and that the URI points to my domain.
As there is no documentation for this plugin - what exactly should the URI be for this? I have https://mydomain.com/dev listed there, and have removed the default one.