I've configured MemberAutorization according to docs and rebuilt the Examin index. I'm using an external identity provider (Azure B2C). When requesting /umbraco/delivery/api/v1/security/member/authorize with correct args I'm redirected to Microsoft for login and then back to Umbraco (with a rather long code), then another redirect to the SPA with a shorter code. Using this code as Bearer token when requesting protected content from the Content Delivery API returns 401.