To uninstall the Areviewer Product Reviews APP go to "Apps" from the Shopify admin.
Click on "Delete" next to 'Areviewer Product Reviews'. It will uninstall the APP & cancel the subscription.
Note: You need to manually remove the APP widgets code in your theme files as Shopify won't allow developers to remove the code after uninstalling an APP.
However, it depends on your theme structure which templates were used to inserting the widgets code & you would need to remove the code from those templates.
Here is a list of the common files which may be used in default themes for inserting the code widgets.
The following code you will get in theme.liquid file.
<script type="text/javascript">(function e(){
var e=document.createElement("script");
e.type="text/javascript",e.async=true,e.src="https://areviewer.com/app/public/js/livereview.js";
var t=document.getElementsByTagName("script")[0];
t.parentNode.insertBefore(e,t)})();
</script>
This widget is normally the template or section you use for product (usually called product.liquid / product-template.liquid / product-page.liquid / product-main.liquid, but some themes work differently).
<div id="photo-video-reviews-widget" data-asin-number="{{ product.metafields.product_asin["ASIN"] }}" data-shop-id="{{ shop.metafields.shopify_shopID.shopify_shopID }}" data-product-id="{{ product.id }}" class="Br-widget-area"></div>
This widget is normally the template or section you use for product (usually called product.liquid / product-template.liquid / product-page.liquid / product-main.liquid, but some themes work differently).
<div id="photo-video-questions-widget" data-asin-number="{{ product.metafields.product_asin["ASIN"] }}" data-shop-id="{{ shop.metafields.shopify_shopID.shopify_shopID }}" data-product-id="{{ product.id }}" class="Br-widget-area"></div>
Star rating code is normally insterted in the templates or sections your theme is using for displaying the products on the Homepage, collections, product pages, etc.
<div class="photo-video-ratings{{product.id}} Br-ratings-widget-area" data-asin-number="{{ product.metafields.product_asin["ASIN"] }}" data-shop-id="{{ shop.metafields.shopify_shopID.shopify_shopID }}" data-product-id="{{ product.id }}"></div>
Note: Some of the widgets may not have installed in your theme, so you don't need to worry about them.