You could go here to download versions of the video plugin on Github
https://github.com/oxwall/video/releases
Please install the latest version of 1.8.3 ( as I believe you don't have any content now) and see if the issue persists.
https://wiki.oxwall.com/install:manual_installation
i
https://www.softaculous.com/docs/Update_Softaculous
you are on a shared plan right? I mean you dont have a vps do you or dedi? If so you can update it yourself.