Hey there,

I am really sorry for the delay of this reply as it is a weekend for us here.

Yes if you referring Facebook autopost feature, because Facebook already updated their API and enforce HTTPS this setting to enabled by default from the app.

Enforce HTTPS. This setting requires HTTPS for OAuth Redirects and pages getting access tokens with the JavaScript SDK. All new apps created as of March 2018 have this setting on by default and you should plan to migrate any existing apps to use only HTTPS URLs by March 2019. Most major cloud application hosts provide free and automatic configuration of TLS certificates for your applications. If you self-host your app or your hosting service doesn't offer HTTPS by default, you can obtain a free certificate for your domain(s) from Let's Encrypt. - Facebook

https://developers.facebook.com/docs/facebook-login/security/#surfacearea