Plugin activation not workign

Tried several times but with no success. I can’t activate the plugin. I’ve put appID, secret, pushed the Login with Facebook, entered my facebook account and after that I’ve got this message:
“ERROR – Graph returned an error: Error validating verification code. Please make sure your redirect_uri is identical to the one you used in the OAuth dialog request”

I’ve searched the web, tried different settings on dev.facebook site, nothing works.

Is there any help out there?

https://wordpress.org/plugins/fb-instant-articles/