After the mfa is disabled, the administrator cannot log in

Talented and enthusiastic friends：

I made a mistake using Oracle Cloud,I disabled MFA after logging in with administrator rights.

I logged into Oracle Cloud again using an administrator account，webpage shows：

I tried to send an email and got the reply: I need contact online customer service.

Now I only have the administrator account password saved, and I also know the tenant information, which does not meet the requirements for resetting the MFA.

The authenticator on your phone still works.

I also try to use other ways. https://support.oracle.com/portal/

Without this Support Identifier, the sr cannot be created.