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Actually i dont get that blank issue, i only get this issue "The system was unable to detect your Facebook Login. Please try again.", which that is come from the session login oauth cannot be found, usually fsockopen, but since fsockopen already enabled, it can be caused by the newest oAuth flow
Can you provide me the video please? also please note this, maybe this is valid bug due by new oAuth FB flow, so I suggest you wait our developer inspect this issue.
I have inserted the file twice but same is not being inserted in the post, is there any specific format for video to be attached. I will attach the video again