[Prepare Shipment] and [Schedule Pickup] Buttons Disappeared

Hello and thank you for your help in advance. I have [Aramex Shipping WooCommerce] plugin Version 1.1.16 installed. For the entirety of its running time, we had access to the [Prepare Shipment] and [Schedule Pickup] buttons in the individual order details screen. However, we realized that they were gone. We tried to roll-back to a previous backup, checked all the settings we could, with no luck.

The clue we have is: The buttons’ code is still in the orders page. By inspecting the order page, basically it reads as:

<!-- Aramex shipment -->
<div style="clear:both; padding-top:10px;">
        <a class=" button-primary " style="margin-top:15px; margin-left:15px; display:none; " id="create_aramex_shipment">Prepare Aramex Shipment </a>
                    </div>

As soon as I remove the CSS [display: none;], the button appears, but it is not clickable.

I hope that you can help me with this issue.

Thank you