Back In Stock - Not Working

So a couple a days ago Back In Stock, stopped working for my client. At this point i’m about ready to give up. I debugged the thing quite a lot and now i’m getting some errors from klaviyo utils. Bellow you can see console logs.

Unable to process event: init,[object Object],function(i){t&&t(i),n(i)} sharedUtils.aaa4a40f3112b6f3f60b.js:1:2269

Unable to process event: enable,backinstock,[object Object],function(i){t&&t(i),n(i)} sharedUtils.aaa4a40f3112b6f3f60b.js:1:2269

My configuration is this (yes, i replaced the ACCOUNT_ID accordingly, i only shared it here like this so i don’t leak the account_id, lol):

var klaviyo = klaviyo || [];
  klaviyo.init({
    account: "ACCOUNT_ID",
    platform: "shopify"
  });
  klaviyo.enable("backinstock", {
    trigger: {
      product_page_text: "Notify Me When Available",
      product_page_class: "klaviyo-bis-trigger",
      product_page_text_align: "center",
      product_page_margin: "0px",
      replace_anchor: false
    },
    modal: {
      headline: "{product_name}",
      body_content: "Register to receive a notification when this item comes back in stock.",
      email_field_label: "Email",
      button_label: "Notify me when available",
      subscription_success_label: "You're in! We'll let you know when it's back.",
      footer_content: '',
      additional_styles: "@import url('https://fonts.googleapis.com/css?family=Helvetica+Neue');",
      drop_background_color: "#000",
      background_color: "#fff",
      text_color: "#222",
      button_text_color: "#fff",
      button_background_color: "#439fdb",
      close_button_color: "#ccc",
      error_background_color: "#fcd6d7",
      error_text_color: "#C72E2F",
      success_background_color: "#d3efcd",
      success_text_color: "#1B9500"
    }
  });

So at one point i got an error, that said something along the lines of: “ID not found, undefined set to 0” or something, so i added a hidden input that said product-id and the product selected or first available product id. So i got rid of that error. Now whenever i hit the link, i get sent to the top and the url gets a #.

Is it because the trigger is an anchor? Should i make it a button? Is there something wrong with klavio bis? Did something happen a few days ago? What am i doing wrong?