If your have an original 2FA Code that shows as invalid upon login, then your Google Authenticator has fallen out of sync. This is an easy fix within Google Authenticator App by selecting the settings menu and and syncing time correction as shown:
If your have an original 2FA Code that shows as invalid upon login, then your Google Authenticator has fallen out of sync. This is an easy fix within Google Authenticator App by selecting the settings menu and and syncing time correction as shown: