Hey @Gabe8
Sorry about the delay. It looks like the issue here is a permissions one. Take a look at: https://shopify.dev/api/admin/access-scopes
It looks like your app requests “read_assigned_fulfillment_orders” but this would only show fulfillment orders assigned by a fulfillment service associated with your app. In this case, it looks like the fulfillment orders are generated for merchant managed locations by Shopify, so I believe you need the scope “read_merchant_managed_fulfillment_orders”.