Gift card create

[ws-virgil]

I just created a custom app on my store and I want to create a gift card with GraphQL API. My app has the necessary access scopes, the store is a shopify plus store and I'm still receiving this message: "Access denied for giftCardCreate field. Required access: `write_gift_cards` access scope. Also: The API client must be a private or custom app installed on a Shopify Plus store.".

What am I doing wrong?