I've tried testing the sandbox api endpoints with this site https://sandbox.dev.clover.com/api_do... and also with a Chrome extension called Postman and curl, and I would receive a 401 unauthorized with the access token.
I passed in an access token that is obtained from the Android SDK during a debug breakpoint for one my apps (CloverAuth.authenticate(getBaseContext(), CloverAccount.getAccount(getBaseContext()). This method did not work for the sandbox endpoint, but it did work as expected in a production environment with a production app.
Please advise.