How can I fix the issue when the "Pre-Order" button is showing up for the wrong variant?
Open Themes section on the admin panel of your web store (Online Store → Themes);
Find Theme from the list which will be used with our installed app.
Click Actions → Edit Code.
Open the product.liquid template and add the code below to the beginning of the file:
<script>SPOCustom = {}; SPOCustom.customVariantSelectors = true;</script>
Save the template file.
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