The Gift Cards section in the Shopify App was updated in v9.160 to focus on issued gift cards. You can still create new gift card products or issue new gift cards via the + Add button. You can still view previously created gift card products in the Products section, including an option to filter the list to only show gift cards. Alternatively, you can shortcut to a filtered view of gift card products in the Products area from the ... Actions menu in Gift Cards.
Although this main Gift Cards screen is more consistent with the web, it means the Shopify App no longer has a Gift Cards Overview screen showing recently issued gift cards and recently updated gift card products. Please use sorting and filtering to achieve these views.
There have also been changes to the look and feel of the screens used to issue new gift cards and to view issued gift cards to align more closely with the web. There are no new features on these screens and no features were removed.