Https://www.patreon.com/api/oauth2/token Stopped working

{
“errors”: [
{
“challenge_metadata”: null,
“code”: 1,
“code_name”: “MethodNotAllowed”,
“detail”: “The method is not allowed for the requested URL.”,
“id”: “xkcd”,
“status”: “405”,
“title”: “Method Not Allowed”
}
]
}

Getting this, with and without www in front

Are you doing a post request?