YITH WooCommerce Gift Cards allows selling gift cards (both virtual and pre-printed ones) in your e-commerce store that users can redeem in your store.
By activating both plugins, a new endpoint will be automatically added to the ‘endpoints’ section from which users can view their gift card details and add new ones by inserting the related codes.

You can configure the endpoint through the available options.

The users’ account will look like this:

From the Gift Cards section, they will be able to view their gift card details (code, balance, usage, status, and Apply to cart link).

It is also possible to add new gift cards (for example, if the user received one) by clicking on Add new and entering the code in the related field.

For further details about YITH WooCommerce Gift Cards settings, please refer to the official documentation.