I log on through FirstMet.com or I use the FirstMet Facebook app.
I log on through the FirstMet iPhone or Android app.
You only need to deactivate your account once, even if you use different platforms. If you attempt to log back in again to FirstMet.com or add the FirstMet application to your Facebook account, this will result in you reactivating your account. If you wish to no longer use FirstMet, you do not need to log in again.