App > Facebook Login - Alert

Hi guys,
Joomla 3.7.4 + JFBConnect 7.2.1
Today, going in my Facebook App to see if all was good I discovered a Facebook Alert:

My App > Facebook Login > Settings > ...Alert..:
"Access to the OAuth client is enabled but you have not provided valid OAuth redirect URIs. Click here for more information."

Please, Don't understand exactly what is the "OAuth redirect URIs" and its work, please, Can you help me to solve it ?

Hi Melissa,
many thanks for your time. Please,
- having my entire site running under https:// ...
- and having setted in my .htacces a redirection rule from all www.mydomain.com to mydomain.com

Do I have to add only the "yourdomain.com/index.php?option=com_jfbc...ck&provider=facebook"
or also the "https://www.yourdomain.com/index.php?option=com_jfbconnect&task=authenticate.callback&provider=facebook" is a must ?!?

Hi Alex, many thanks on help in understanding