DLP cannot login the console

Dear experts..

I have a problem with the authorization in DLP web console. The version of DLP is 14. i cannot login the DLP console.
The error is Invalid username/password or disabled account. I have changed my password but no any result
My domain account is not blocked. There is no any problem with our domain controllers.

How to solve the problem? Does the DLP has its builttin admin account or no? Plz help me> Bellow atached file