If you experience problems failing to log in to your account from the Indodax application and a "user not authenticate" notification appears, the first step that can be done is to restart your device, then try reinstalling the Indodax application again. If after doing these steps the same notification still appears, we can recommend trying to log in through the official Indodax website as an alternative. If the problem persists, immediately send a screenshot of the problem experienced via email to support@indodax.com. Indodax support team will help you solve this problem through maximum handling.