@seekinch Welcome to the forum!
There is actually no need to reinstall the extension to get 2FA back.
As I noted above, and as previously mentioned by tgreer and frustrated, you can simply deauthorize your active sessions to restore the 2FA requirement and “un-remember” any devices for which you’ve checked the “Remember me” option (an option that tells Bitwarden the device is trusted and therefore exempt from further 2FA challenges).
To deauthorize sessions, simply log in to the Web Vault, click on your avatar (circled initials) in the upper right corner and select Account Settings:
On the Account Settings page, scroll down to the Danger Zone section, and click Deauthorize sessions:
You will now be presented with a prompt to enter your Master Password and confirm your decision to deauthorize all sessions:
After you enter the Master Password and click the Deauthorize sessions button, you will immediately be logged out, and you should see the login screen with the following confirmation message:
At this point, every device will require 2FA to login (until you enable the “Remember me” option again).