Board Thread:Support Requests - Getting Technical/@comment-4700962-20170928172406/@comment-31798335-20170928190117

Animelovefan wrote: I want to eliminate any video that belongs to my account in pages like Dailymotion and Youtube but weren't published in wiki by me.

If they were allowed in the past and you authorised it, you can't change the license. It is still CC-BY-SA and by the license terms you can't DCMA it.