[Vuejs]-A refresh is needed to see the changes, using Vue

Thank you guys. I found useful resource, it should work, but I have problem with implementing it in my code. I’m posting link to the solution:

http://michaelnthiessen.com/force-re-render/ (The best way: key-changing)

And to my bigger piece of code: https://pastebin.com/xxjZJ1kL

Please tell me how to implement it, because when I add this code:

<template>
  <component-to-re-render :key="componentKey" />
</template>

I’m losing visibility of some of the elements. I think i should name my component somehow, but I don’t know what to do next.