If you want, I can:

Use the forgot password link on the SAi Cloud login page to receive a reset link via email.

To install or update to version 10.5, you typically need a specific password linked to your hardware key number.

If you are locked out, try these methods in order of safety and legitimacy.

Copy flexi.lic from C:\ProgramData\SAi\ to an external drive or cloud storage. This file can restore activation without a password in many cases.

Limitation: This only works for versions that used cloud-based authentication, and if the original email is accessible.