Which plugin or both? “FV Player” vs. “FV Player Pro”

I had “FV Player” but then I licenses “FV Player Pro”. I don’t remember exactly why I licensed the Pro version, but I think it was so that it would remove a watermark. I really don’t remember. — In my WordPress plugins list, both appear. I think both used to be Activated. Currently, only “FV Player” is activated and “FV Player Pro” is NOT activated. That surprised me. I don’t know who would have inactivated it but there are a couple of other people who had or have admin access to our WordPress site. — The player seems to be working fine though! There is no watermark or “FV Player” logo showing. I don’t understand whether one or the other plug-in should be activated, or both. Please advise.

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