FBOmatic not working on the site

I bought my second license for FBOmatic, but I doen't seam t et the connection. I think it's te same settings a's my first, but it's stil saying the same error <div> <div>[16-Nov-2020 17:41:36 Europe/Brussels] Unrecognized API response: {"error":{"message":"(#100) Pages Public Content Access requires either app secret proof or an app token","type":"OAuthException","code":100,"fbtrace_id":"AerOBL1jy7d3GsxG8p8-zEN"}} URI: https://graph.facebook.com/v3.3/103109694715490/feed?access_token=EAAF7LaZAv944BADLfceDFsZC3ZAs7NRv9PjlZC3EjComIOy6rY5uXEpk8NZBwxf8Oeh4qutmg5rzLBk5s2ybS8ZCqdry7fv5jMjpAxT9BeFKGBxa2LSL2xn5ZCAyWVIBtRvE1glmkyj5EZBtP7oez8a0bBpl8lOtRZCjRNSMVIqSK48de7WCCVMLT&limit=100&fields=full_picture,picture,id,message,from,story,attachments,created_time</div> </div> I entered the code's like explained for: Facebook App ID - App Secret - Access Token But it doesn't work. Please advice