LookerStudio: dashboard has disappeared after the violation reporting

Dear LookerStudio community,

One of my LookerStudio dashboard has disappeared after someone has reported a violation.

And as a dashboard owner, I have not received any notification that the dashboard was blocked.
So I am not able to check the reason of violation and even open the dashboard on my side to make any corrections.

Has anyone faced such issue? Is there a way to see the violation reason in the account / settings?