Invalid callback url for react-native

[beckprograms]

Callback URIs are case-sensitive. If you see an error in the console about a mismatch between your callback URI and the one configured in your Auth0 dashboard, don’t just eyeball it—copy and paste the exact URI from the login error page shown by Auth0. Alternatively, double-check your casing, or just standardize it by using lowercase across the board to avoid issues.