How to add Universal Plugin or wordpress plugin in My wix.com premium website?

I recently bought a domain, and now i want to monetize that website, but when i'm trying to add my site with the 3rd party sites they gives me to add Universal plugin to add to website. I don't know how to add it. Plz help me as soon as possible. Thank You Very Much. (:3rd party like cp.magnet.com says to add universal plugin