Enable embedded facebook login through 3rd party apps

I have Facebook post enabled on browser & tried removing shields & allowing all cookies but can’t bypass this on a few apps!

This error is coming from Facebook, Which app are you using? I would also check your facebook settings in case there is a toggle for this.

I’m trying to use apps like GasBuddy & all pop up with this message. I’ll check Facebook but feel it’s something within brave browser, could be wrong. Thanks