We are using Community Store 2.2.7. and when selecting “allow backorder” we like to put a message on the product page showing it’s a backorder.
Below the code for telling it is out of stock. <p class="store-out-of-stock-label alert alert-warning <?= ($isSellable ? 'hidden' : ''); ?>"><?= t("Out of Stock"); ?></p>
I don’t know were to start. Searched for BackOrder but couldn’t find anything usefull.