Uninstall App

From your admin, go to Apps > SnakeCom Promotion Popup and click Delete button

Remove 2 lines of code below in theme.liquid from your theme.

{{ 'snakeco-promotionpopup.css' | asset_url | stylesheet_tag }}
<script src='{{ 'snakeco-promotionpopup.js' | asset_url }}' defer='defer'></script>