If your Facebook sync fails due to an invalid access token, Ometria will send you an email alert.
Ometria sends one email alert per day for a failing connection.
See also: Support alerts
Renew your token
To fix the issue, follow these instructions on renewing your access token.
Delete the Facebook sync
If you're no longer using your Facebook sync and don't want to renew your access token, please delete the connection.
In Ometria go to Settings > Connections and select your Facebook sync.
Scroll to the bottom of the screen and click Delete connection.