The message you received is not a spam or an advertisement. It is a technical question related to software. The issue you are facing seems to be with the authorization of your Foscam FI9831W camera while trying to connect it to the ONVIF Device Manager program. The error message suggests a problem with authentication headers. To solve this, you may need to check your camera's settings and ensure that the authentication parameters are correctly configured in the ONVIF Device Manager. It is recommended to consult the documentation or support resources for the program and your camera model for further assistance in resolving this issue.