How to resolve Facebook Login is currently unavailable for this app ...
In the facebook developers console for your app, go to App Review-> Permissions and Features. Set the public_profile and email to have advanced access. This will allow all facebook users to have access and these two settings are auto granted. Ensure the Access Level indicates Advanced Access

Facebook share link - can you customize the message body text?
Facebook will not allow developers pre-fill messages. Developers may customize the story by providing OG meta tags, but it's up to the user to fill the message. This is only possible if you are posting on the user's behalf, which requires the user authorizing your application with the publish_actions permission. AND even then:

facebook - How to register test number when using WhatsApp Business API ...
You can't add any testing phone numbers, Facebook App by default provides one, that you can see in From dropdown, You can add only productions phone numbers, follow the below ways, You can find the option in your Facebook App > Getting Started under WhatsApp menu, Second, you can add from Your Business Setting, Read more about how to register a phone number in WhatsApp Business, https ...

Android Facebook integration with invalid key hash
The Facebook SDK for Unity gets the wrong key hash. It gets the key from "C:\Users\"your user".android\debug.keystore" and, in a perfect world, it should get it from the keystore you created in your project.

Implement Facebook API login with reactjs - Stack Overflow
I'm working on using Facebook's Javascript SDK for authentication. I've been able to import the SDK properly and put a Like button on my page. But, the facebook login button has to be wrapped in th...

Facebook login message: "URL Blocked: This redirect failed because the ...
Important notice: If you register for testing, go to your profile settings and to your interests add delete profile. Trying to login with Facebook to my website: I get the following error: URL

Facebook share link without JavaScript - Stack Overflow
Learn how to create a Facebook share link without using JavaScript, including tips and solutions for effective sharing.

Decoding facebook's blob video url - Stack Overflow
Facebook downloads the audio and the video separately, so get the audio link from the google chrome inspector, by right click on the video and choosing inspect ,going to Inspector, Network Tab, and checking the links, use filter:larger-than:50k in the filter area to select bigger files (change 50k according to the length of your video), look in ...

How to add facebook share button on my website? - Stack Overflow
Note that with using the Facebook SDK your users are being tracked only by visiting your site; they don't even need to click any of your Share or Like buttons. The answers below suggesting only a simple link (a href) solve this issue.

How to extract the direct facebook video url - Stack Overflow
This is in fact the correct answer, was able to extract link with Chrome developer tools through m.facebook...