Thanks for the note Martin! I never got AppleAuth working locally from within the expo client (hence advising to build standalone once you hit the “audience mismatch” error). In particular, after I added host.exp.Exponent to the Services ID field as noted, I got an error as follows: `Error: The nonce in ID Token xxx does not match the SHA256 hash of the raw nonce yyy in the request.` Since my implementation was working in standalone mode, I left it at that.

Were you able to get it up and running in the Expo Client? If so I’d love to update my post with the changes needed to get it there.