Thank you for the reply raskinner!
You can revoke an app-specific password by following the actions at the bottom of that article:
"How to revoke an app-specific password
You can have up to 25 active app-specific passwords. If you need to, you can revoke passwords individually or all at once.
- Sign in to appleid.apple.com.
- In the Sign-In and Security section, select App-Specific Passwords.
- Select the Remove button
next to a password you want to delete, or Revoke All.
After you revoke a password, the app using that password will be signed out of your account until you generate a new password and sign in again.
Any time you change or reset your primary Apple ID password, all of your app-specific passwords are revoked automatically to protect the security of your account. You need to generate new app-specific passwords for any apps that you want to continue using."
If you need additional assistance on doing this, please contact Apple directly here:
Get Support
Cheers!