Can no longer logon with Facebook

Hello…

First thank you for this wonderful plugin, it has been working seamless for the past year.

Since the last week I no longer use my social plugin that give my users the ability to logon to my website using their Facebook account, nothing has changed with my plugin settings.

Have the technical team ever seen this problem?

I even went into the Cloudflare Firewall settings and added in the tools section Facebook ASN’S numbers Whitelist, and added the IP address in Facebook settings and I still get the error below:

It throws the following error :
URL Blocked: This redirect failed because the redirect URI is not whitelisted in the app’s Client OAuth Settings. Make sure Client and Web OAuth Login are on and add all your app domains as Valid OAuth Redirect URIs.

This is the Debug info from my plugin:
Debug: Facebook
Network connection successful: https://graph.facebook.com/v3.2/oauth/access_token
Trying 157.240.18.15…
TCP_NODELAY set
Connected to graph.facebook.com (157.240.18.15) port 443 (#0)
ALPN, offering http/1.1
Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
successfully set certificate verify locations:
CAfile: /home/thetalkb/public_html/wp-includes/certificates/ca-bundle.crt
CApath: none
SSL connection using TLSv1.2 / ECDHE-ECDSA-AES128-GCM-SHA256
ALPN, server accepted to use http/1.1
Server certificate:
subject: C=US; ST=CA; L=Menlo Park; O=Facebook, Inc.; CN=*.facebook.com
start date: Jun 6 00:00:00 2019 GMT
expire date: Sep 4 12:00:00 2019 GMT
subjectAltName: host “graph.facebook.com” matched cert’s “*.facebook.com”
issuer: C=US; O=DigiCert Inc; OU=www.digicert.com; CN=DigiCert SHA2 High Assurance Server CA
SSL certificate verify ok.
POST /v3.2/oauth/access_token HTTP/1.1
Host: graph.facebook.com
Accept: /
Content-Length: 0
Content-Type: application/x-www-form-urlencoded
< HTTP/1.1 400 Bad Request
< WWW-Authenticate: OAuth “Facebook Platform” “invalid_request” “Missing redirect_uri parameter.”
< Content-Type: application/json; charset=UTF-8
< facebook-api-version: v3.2
< Strict-Transport-Security: max-age=15552000; preload
< Pragma: no-cache
< x-fb-rev: 1001045106
< Access-Control-Allow-Origin: *
< Cache-Control: no-store
< x-fb-trace-id: F855J+iOnm9
< x-fb-request-id: Avnz94UbuYWP4_8zjiUVGej
< Expires: Sat, 01 Jan 2000 00:00:00 GMT
< X-FB-Debug: 2cpbECyfBMjooLUxKFMbkji+T0s1NHjSn4R2IgOpIYrchfWqA3RTpr8fzST1fZvHEOhIrMd/5Uksf7T+dXGxNQ==
< Date: Mon, 12 Aug 2019 12:49:59 GMT
< Connection: keep-alive
< Content-Length: 129
HTTP error before end of send, stop sending
<
Closing connection 0
{“error”:{“message”:“Missing redirect_uri parameter.”,“type”:“OAuthException”,“code”:191,“fbtrace_id”:“Avnz94UbuYWP4_8zjiUVGej”}}

Thanks,
Naomi