Manually install Opinew in your shop

For review stars on your product pages use this:

<div id='opinew-stars-plugin-product'>{{ product.metafields.opinew_metafields['stars_product'] }}</div>

For review stars on your collections/product lists pages use this:

<div class='opinew-stars-plugin-product-list'>{{ product.metafields.opinew_metafields['stars_lists'] }}</div>

For the review widget:

<div style="clear:both;"></div><div id="opinew-reviews-product-page-code"><span id="opinew-plugin" data-server-address="https://www.opinew.com" data-opinew-shop-id="{{ shop.id }}" data-platform-product-id="{{product.id}}">{{ product.metafields.opinew_metafields['product_plugin'] }}</span></div>