Personal AWS SKill Builder Account Inaccessible

Hi,

The best way is to use the form at the bottom of the homepage under Support.

Please, see note on https://docs.aws.amazon.com/signin/latest/userguide/mfa-aws_builder_id.html

Note
We recommend that you periodically review your registered MFA devices to ensure 
they are up to date and functional. Additionally, you should store those devices 
in a place that is physically secure when not in use. If you lose access to all registered 
MFA devices, you will be unable to recover your AWS Builder ID.

Good luck!

Didier