I checked the code and the plugin totally missing from github, and sumup using new PHP SDK, and this not handled in the wc sumup plugin. so I don’t know what is the solution.
This is the error message in the code level:
string(292) "{"type":"https://github.com/sumup/op-plugin-onboarding/blob/main/docs/problems/422-unprocessable-entity-connection-not-validated.md","title":"Unprocessable Entity - Connection not validated","status":422,"detail":"The website of this connection is not available","instance":"/v1/connections"}"
{
"type": "https://developer.sumup.com/docs/problem/problem/404-not-found",
"title": "Not Found",
"status": 404,
"detail": "Resource not found"
}
I got the same message, the bug still exists in 2.9.1 version
