I have a website in which the videos are not sharable. However they are sharable to a client when he logs in. He is using chrome on a mac. I am using chrome on a pc.
Any ideas on how to make all videos not sharable?
s2Member doesn't control Vimeo's shareability. You should check with Vimeo how to disable that function.
Or maybe I didn't understand your question? If so, please rephrase it a bit and describe it a bit more, please.
As @clavaque said, s2Member doesn't control whether embedded Vimeo videos are shareable -- that is done via Vimeo itself. See this article for details: https://vimeo.zendesk.com/hc/en-us/articles/224969968-Embedding-videos-overview.