This usually happens when Facebook detects unusual activity or a possible policy violation. I would suggest checking ur Page,Account status first, look for any warnings or restrictions nd request a review if u think it is a mistake. Also avoid repeated upload attempts until u know the exact reason as it can sometiimes make the issue last longer.I can't post my content on Facebook; it seems I've been restricted from uploading videos and other content. Can anyone guide me on how to resolve this issue?