iOS SDK A0AuthenticaionAPI doesn't work, but A0WebAuth works

Using iOS SDK, Objective-C (actually wrapper over Swift, so don’t think it matters ObjC or Swift).

Able to authenticate via A0WebAuth, but A0AuthenticationAPI fails with error with same parameters.
Error is: domain: “com.auth0.authentication” - code: 1 “Not Found”
What not found?!?

The only additional parameter for A0AuthenticationAPI is “connection”, I pass value “Username-Password-Authentication” as set in my iOS app in console.

+ (void)startSessionWithAuth0WebAuth {
    NSDictionary *auth0 = [Theme apiValueWithName:@"Auth0"];
    A0WebAuth *webAuth = [A0WebAuth.alloc initWithClientId:auth0[@"client-id"] url:[NSURL URLWithString:auth0[@"url"]]];
    [webAuth addParameters:@{@"audience": auth0[@"audience"]}];
    webAuth.scope = auth0[@"scope"];
    [webAuth start:^(NSError *error, A0Credentials *credentials) {
        if (!!error)
            NSLog(@"%@", error);
        else {
        	// WORKS !!!
        }
    }];
}


+ (void)startSessionWithAuth0AuthorizationAPI {
    NSDictionary *auth0 = [Theme apiValueWithName:@"Auth0"];
    A0AuthenticationAPI *apiAuth = [A0AuthenticationAPI.alloc initWithClientId:auth0[@"client-id"] url:[NSURL URLWithString:auth0[@"url"]]];
    [apiAuth loginWithUsernameOrEmail:<valid_email>
                             password:<valid_password>
                           connection:auth0[@"connection"] 
                                scope:auth0[@"scope"]
                           parameters:@{@"audience": auth0[@"audience"]}
                             callback:^(NSError *error, A0Credentials *credentials) {
        if (!!error)
            NSLog(@"%@", error); // <- ALWAYS: domain: "com.auth0.authentication" - code: 1 "Not Found"
        else {
            // DESN'T WORK
        }
    }];
}

Hey there!

The most effective way to get help on that would be to raise it as a GitHub issue in the SDK repo so we can work on that directly with the repo maintainers. Once you have a link to it can you share it here with us so we can ping them? Thank you!