How to destroy fullpage.js when switching between routes?

Question

Vue.js

Hi all.
There is a site from 5 pages. Each page is a router.
On the main page in mounted() I initialize fullpage.js. Everything is ok at this stage.
But when I go to another page (the router changes), then html and body have classes and styles that were added by the fullpage.js plugin and which break the layout on other pages.
The plugin has a destroy("all") function that removes all initialization and everything associated with the plugin. I tried to run it in router/index.js with the beforeRouteLeave method, it doesn't work.
How can the problem be solved?