If you sign up for government e-newsletters to your email address, you would get these announcements and notifications. This one came out maybe two weeks ago, including:

"Also effective January 1, 2022, a new FIRE Account User ID format will be required. It must contain,

• a minimum of 8 to 25 characters
• both alpha and numeric characters, with
• no special characters or no spaces. 

If your current User ID does not meet this criteria, you will be prompted to create a new User ID. At that point, the system will log you out and place you back on the logon page. You will then be able to logon using your newly created User ID."