You reinstalled the app.
Now the code is no longer accepted.
Your previous setup is already gone.
The connection was not restored.
Reinstalling Removes Your Authenticator Data
Authenticator apps store account data locally.
This includes the secret keys used to generate codes.
When you reinstall the app, that stored data is erased.
There is nothing left to generate valid codes from.
Why Your Codes No Longer Work
Your account is still linked to the old setup.
But your app no longer has that key.
The system expects codes based on the previous configuration.
That mismatch causes every attempt to fail.
What You’re Seeing Right Now
The app may look normal.
You can add accounts.
You can generate codes.
But those codes don’t match your account anymore.
The original link is already broken.
How to Fix This Properly
You need to connect your account again.
This requires setting up 2FA from scratch.
- Log in using backup methods (email, SMS, recovery code)
- Go to your account security settings
- Remove the old authenticator setup
- Enable 2FA again
- Scan the new QR code with your app
This creates a new secret key.
After that, your codes will work again.
What Will Not Fix This
- Reinstalling the app again
- Waiting for the app to restore data
- Trying different time settings
- Using previously generated codes
The original data is already gone.
It cannot be recovered inside the app.
Why This Feels Confusing
Reinstalling usually fixes app problems.
But authenticator apps are different.
They don’t sync automatically by default.
They rely on locally stored keys.
Once removed, the link is lost.
How to Avoid This Next Time
- Back up your authenticator accounts before reinstalling
- Use apps that support cloud backup if possible
- Save recovery codes in a secure place
- Transfer accounts properly before switching devices
This prevents unexpected lockouts.
If You Can’t Log In
Use your account recovery options.
Most platforms offer:
- Email verification
- SMS login
- Manual identity confirmation
Once access is restored,
set up your authenticator again immediately.
If your OTP stops working after reinstalling the app, your previous setup is already gone. You must reconnect your authenticator to generate valid codes again.