Hi Team,
I need to update the working of the Buy Again button on the Order details page. Can I override or hide the functionality of the button using a custom app?
It should be possible to disable the default button in settings and add your own action to the action menu.
Disable – Buy Again button on Order status page and Orders page can now be hidden - Shopify Changelog
Add new action About order action menus
You cannot override it (default shopify feature)
but you can hide it with CSS or JavaScript and create your own reorder button
The checkout page is not editable unless you’re signed up to Shopify Plus. In that case, customizing the checkout page without proper expertise is not recommended.