How to obtain a long lasting Facebook Access Token?

Main objective: How can I get an access token with unlimited validity for a facebook app? Background information We have a FB app called MyApp with the following set up: - MyApp is authorized to interact with our facebook app - MyApp has access rights to manage our pages (manage_pages) - MyApp has access to Insights (read_insights) Our goal is to extract the Insights data automatically, e.g. once every night. Attempt with oauth generated app token Get APP_ACCESS_TOKEN belonging to MyAPP graph.facebook.com/oauth/access_token?client_id=YOUR_APP_ID&client_secret=YOUR_APP_SECRET&grant_type=client_credentials example of retireved token: 328467452729456598|Wn2Gt69Ofg5ySdOGa3TsP2p4R Use APP_ACCESS_TOKEN to get PAGE_ACCESS_TOKEN for each page graph.facebook.com/me/accounts?access_token=APP_ACCESS_TOKEN Use PAGE_ACCESS_TOKEN to get the page’s Insights data: graph.facebook.com/YOUR_APP_ID/insights?access_token=PAGE_ACCESS_TOKEN My problem is that the APP_ACCESS_TOKEN I get from step 1 seems to be missing the user part of the token, resulting in the following error when running step 2: ``` "message": "An active access token must be used to query information about the current user.", "type": "OAuthException", "code": 2500 ``` Attempt with token retrieved from Graph Explorer API token If I use the APP_ACCESS_TOKEN gained through the Graph API Explorer (https://developers.facebook.com/tools/explorer), I get a token with the user part that is significantly longer. If I use this token in step 2 and 3, I get correct data, but all tokens are only valid for 2 hours, and subsequently I cannot use this for automated retrieval of insights data. Attempt with exchanging short lived token for long lived token Following the steps outlined in this guide: https://developers.facebook.com/roadmap/offline-access-removal/#page_access_token, I tried to exchange a short lived token for a longer lived one. If I use try to exchange the token obtained from the oauth process, I get the error: ``` "message": "No user access token specified", "type": "OAuthException", "code": 1 ``` If I use the token obtained manually from the Graph explorer in the exchange method, I can get the other steps to work as well, but for how long does this new token last? If the token expires after x days or after the some other event, I would still be faced with the issue of obtaining the initial token programatically (as opposed to manually every from the Graph Explorer). So does anyone know how I can get a long-lived, automatically retrieved token to solve this? Thanks!