Rather than trying random troubleshootiing methods i will try finding out the cause of this restriction first. Facebook always gives reasons for such restrictions either in Account Status or in the email sent to me. In case of an error an appeal may be helppful.
You are logged in using a mobile app or persistent program. Please try logging in using an incognito browser and log in again to view the video content.
Temporary bans r not a new thing for me. The very first thing that comes to mind in this case would be checking ur Account Status for an explanatiion from Facebook as to what went wrong. If this was done in error file a request nd wait a little bit.
It could also be advisable to test if the problem is with the whole account or just videos. If other content types like pictures nd text posts r workking fine while videos do not then that will give us some clues on what could be causing the problem.
Contact the FB's support in order to sort it out.
