Password reset with REST API

POST /account/senders/{senderUid}/resetpassword I'm using the above with the REST API to attempt to reset passwords for senders in an account. I get a status code 200 returned and no content in the response payload as expected, but the password never resets for any sender and I'm able to login with the old password just fine. Is this resetting something else other than a senders password? What should I expect the password to be reset to the REST API doc says nothing about this. Rest API Doc excerpt. Reset the Password for a User POST /account/senders/{senderUid}/resetpassword Description Reset a user's password. Resource Information HTTP Method POST Resource Family account Authentication Authentication Tokens Content-type application/json Accept application/json Path Parameters senderUid Unique identifier of a eSignLive sender Example Request POST https://sandbox.e-signlive.com/api/account/senders/VZ5ZTPUxkQMU/resetpassword Response Payload no content