Hello,
Based on our plugin existing feature, the availability checker popup will show on the Shop page and Checkout page only as it’s already shown here https://app.liasupermercado.com.br/index.php/shop/ and Checkout page https://app.liasupermercado.com.br/index.php/checkout/ on your website.
Moreover, we have listed this in our plugin update list to add a feature to our plugin to select a page to show the availability checker popup in our future update of the plugin.
Best Regards,
ThemeLooks Support Team