Name/surname not received from API

We've encountered an issue with implementing "Sign in with Apple." We've set up an authorization mechanism that returns a JWT, which includes the following fields in the IdTokenPayload: iss, aud, exp, iat, sub, at_hash, email, email_verified, auth_time, and nonce_supported.

We tested this using an Apple ID that had not previously been used with our app. At this stage, we expected to receive the user's name, but instead, the relevant fields are returning null values, and all we receive is the email address.

Here’s an example of the JWT payload we're receiving:

{ "iss": "https://appleid.apple.com", "aud": "com.octocrm.webapp", "exp": 1724833875, "iat": 1724747475, "sub": "000335.ad7cef1b0a3c474b842531f95444f2ad.1205", "at_hash": "perz_dvgtpe4cglpuzzj-a", "email": "firma.pl", "email_verified": true, "auth_time": 1724747463, "nonce_supported": true }

We were expecting the user's name fields (e.g., name, given_name, family_name) to be populated in the JWT, but instead, they are returning as null. Is there something we're missing in our implementation, or is there a specific condition that needs to be met for these fields to be included? Any guidance on how to resolve this issue would be greatly appreciated.