Issues with Amazon Cognito iOS SDK V2 using Facebook and Google+ Provider Authentication

I am currently unable to authorize users using AWS iOS SDK V2 using Facebook and Google+ as the provider.

I'm not sure if its my setup on the AWS Developer Console, or whether its the code.

This is the role policy for the identity pools:

{  
"Version": "2012-10-17",  
"Statement": [{  
    "Action": [  
        "mobileanalytics:PutEvents",  
        "cognito-sync:*"  
    ],  
    "Effect": "Allow",  
    "Resource": ["*"]  
}]  

I do receive an unauthorized Cognito ID but when I try to use either Facebook or Google+ provider authentication, it does not work.

Once the Facebook login returns I can successfully use the user properties to extract the profile picture, name and email address. I then get the token (yes it is a very long string of characters) from the Facebook session and use it in the deviceID class:

- (void)loginViewFetchedUserInfo:(FBLoginView *)loginView
                        user:(id<FBGraphUser>)user {

//Populate viewcontoller with Facebook data
self.profilePictureView.profileID = user.id;
NSRange range = [user.name rangeOfString:@" "];
self.firstName.text = [user.name substringToIndex:range.location];
self.lastName.text = [user.name substringFromIndex:range.location+1];
self.emailAddress.text = [user objectForKey:@"email"];

//Get Facebook token, set then get Cognito device ID - in DeviceId class
NSString *token = FBSession.activeSession.accessTokenData.accessToken;
DeviceId *myDeviceId = [DeviceId sharedInstance];

cognitoDeviceId = [myDeviceId setFacebookToken:token];

}

The DeviceID class implementation is shown below:

#import "DeviceId.h"
#import <AWSiOSSDKv2/AWSCore.h>
#import <AWSCognitoSync/Cognito.h>

@implementation DeviceId

static NSString *cognitoId;
static DeviceId *_sharedInstance;
static AWSCognitoCredentialsProvider *credentialsProvider;
static AWSServiceConfiguration *configuration;

+ (DeviceId *) sharedInstance
{
    if (!_sharedInstance)
    {
        _sharedInstance = [[DeviceId alloc] init];
    }

    return _sharedInstance;
}

- (NSString *) getDeviceId
{
    return cognitoId;
}

- (void) setDeviceId
{
    /*
     * AWS Cognito
     */

        credentialsProvider = [AWSCognitoCredentialsProvider
                            credentialsWithRegionType:AWSRegionUSEast1
                            accountId:@"(accountID"
                            identityPoolId:@"(identityPool)"
                            unauthRoleArn:@"arn:aws:iam::(accountID):role/Cognito_quizOnTapUsersUnauth_DefaultRole"
                            authRoleArn:@"arn:aws:iam::(accountID):role/Cognito_quizOnTapUsersAuth_DefaultRole"];

        configuration = [AWSServiceConfiguration configurationWithRegion:AWSRegionUSEast1
                                                                          credentialsProvider:credentialsProvider];

        [AWSServiceManager defaultServiceManager].defaultServiceConfiguration = configuration;

    // Retrieve the cognito ID.
    cognitoId = credentialsProvider.identityId;

    if (!cognitoId) {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Identification Error"
                                                        message:@"Error on User Account."
                                                       delegate:nil
                                              cancelButtonTitle:@"OK"
                                              otherButtonTitles:nil];
        [alert show];
    }
}

-(NSString *)setFacebookToken:(NSString*)token {

    credentialsProvider.logins = @{ @(AWSCognitoLoginProviderKeyFacebook): token };
    [self setDeviceId];
    return cognitoId;
}

-(NSString *)setGooglePlusToken:(NSString*)token {
    credentialsProvider.logins = @{ @(AWSCognitoLoginProviderKeyGoogle): token };
    [self setDeviceId];
    return cognitoId;
}

@end

I get no error message and the dashboard above never shows an authenticated user. The CognitoID never changes its value. Can someone tell me where the issue is?