Here is my test page:
Here is the error my Patrons are getting:
{
“error”: “invalid_request”,
“error_description”: “Mismatching redirect URI.”,
“state”: “YToyOntzOjE4OiJmaW5hbF9yZWRpcmVjdF91cmkiO3M6MzU6Imh0dHA6Ly93d3cubWNyaWRlci5jb20vcGF0cm9uLXRlc3QvIjtzOjEzOiJwYXRyZW9uX25vbmNlIjtzOjMyOiJkMzcyZTY4NDBiNTEzMDUwMTI0MGFkYjRiYzdkMDFkMCI7fQ==”
}
Any ideas on what the problem is?