Hi,
Would you be able to clarify where you asked for assistance when you said "Tech support of GCP didn't response my question"?
Based on my understanding, it seems support will require further details of your instance and project set up. It would be my recommendation to file a
private issue on our Issue Tracker
here. Setting it to private will ensure that your instance and project details will not be shared publicly. You may feel free to follow the steps mentioned in the link provided above.
Hope to be able to assist you there!