We validate incoming connections to our server by testing the passed in Access Token against Clover in the following format:
https://www.clover.com/v3/merchants/{MerchantID}/?access_token={AccessToken}
Usually we get a response that lists the Merchant's information.
Our server now gets the response {"message":"401 Unauthorized"}
with our Dev Device.
Yet if I pass the same URL to a browser on a separate computer (my development PC) it connects through fine.
I checked the Date / Time on the server and it is correct. I loaded the URL into a browser on the server and got the same {"message":"401 Unauthorized"}
message. This only affects our Dev Device, but this has been working fine until now.