At the end of 2017, Facebook changes their login policy. As a result, Facebook login failes with message like beow. To fix, follow the instructions below. 1. Update Gianism Update Gianismn to 3.0.9. 2. Facebook app’s setting Reconfirm Facebook app’s setting. Requirements are below. App domain If facebook login has been working on your site, this couldn’t be nesessary. In app setting page, go to “App > Setting > Basic” and check if domain is propery set.   Redirect URI On screeen “Product > Facebook Login > Setting”, Set URI which you can get on Gianism setting screen as Valid OAuth Redirect URIs. ＊ After following the insructions above, you … Continue reading Failed Facebook login since Mar 2018