Facebook access token error validating application
-Melissa This error means that the page ID that is being used is not valid, so something is probably incorrect in how the channel is set up or permission to the page.
Could you take a screenshot of your channel setup in the JFBConnect backend Channel edit area?
If that hasn't been resolved, we need to back up and address that issue still.
If you have gotten past that, can you try toggling the ' Post as Page' option in the channel to No? But here are the issues on the Facebook Channel page: "The selected user has not granted the "manage_pages" permission. Please make sure your channel is published and review settings for any possible errors.
This article provides you an alternative method to get access tokens.
When you Goto Settings ‘ as in the image above, that means you won’t be able to get the access token.
An App Token is not required to use our plugin BUT it’s possible at times because of all the users and connections that our App will get overloaded with requests. https://developers.facebook.com/ and click the menu item, ‘My Apps‘ then click on Add a New App.Part of the problem of changing domain names is that a lot of things like the Facebook Channel get invalidated.However, when I try to re-validate the Facebook channel by changing the user name to something else and saving and then changing back to the original user name, I don't get the validation prompt on the front end to confirm the user. Or is there a way I can get the validation prompt to appear.My windows like photo used to work great at uploading to Facebook but now I get : error validating access token used 1435422119 has not authorized application 30713015083. I am getting the following error Facebook API Error: Error validating access token: The session has been invalidated because the user has changed the password.