AWS for iOS app - ios

Question

I have setup AWS in my Unity game and it works fine in the editor and on Android but when I test it on iOS it doesn't seem to access AWS properly.
I have added the NSAppTransportSecurity elements to my info.plist file but that doesn't seem to help.
If it helps, the services I'm using are Cognito and SimpleDB.
This is the error I get from the Xcode debugger when trying to access AWS:
NullReferenceException: A null value was found where an object
instance was required. at Amazon.AWSConfigs.get_LoggingConfig ()
[0x00000] in :0 at
Amazon.Runtime.ClientConfig..ctor () [0x00000] in :0
at Amazon.CognitoIdentity.AmazonCognitoIdentityConfig..ctor ()
[0x00000] in :0 at
Amazon.CognitoIdentity.AmazonCognitoIdentityClient..ctor
(Amazon.Runtime.AWSCredentials credentials, Amazon.RegionEndpoint
region) [0x00000] in :0 at
Amazon.CognitoIdentity.CognitoAWSCredentials..ctor (System.String
accountId, System.String identityPoolId, System.String unAuthRoleArn,
System.String authRoleArn, Amazon.RegionEndpoint region) [0x00000] in
:0 at GameControl.get_Credentials
Thanks for any help
EDIT:
This is how my references to Cognito and SimpleDB are set up:
private CognitoAWSCredentials _credentials;
public CognitoAWSCredentials Credentials
{
get
{
if (_credentials == null)
_credentials = new CognitoAWSCredentials("IDENTITY_POOL_HERE", RegionEndpoint.APSoutheast2);
return _credentials;
}
}
private AmazonSimpleDBClient _simpleDB;
public AmazonSimpleDBClient SimpleDB
{
get
{
if (_simpleDB == null)
{
//Connect to the DB
_simpleDB = new AmazonSimpleDBClient(
credentials: Credentials,
region: RegionEndpoint.USWest2);
}
return _simpleDB;
}
}
This is how I'm calling it:
//Disable SSL certification (This prevents "authentication or decryption has failed" error and "Invalid certificate")
System.Net.ServicePointManager.ServerCertificateValidationCallback +=
delegate(object sender, System.Security.Cryptography.X509Certificates.X509Certificate certificate,
System.Security.Cryptography.X509Certificates.X509Chain chain,
System.Net.Security.SslPolicyErrors sslPolicyErrors)
{
return true; // **** Always accept
};
username = PlayerPrefs.GetString("Identity");
if (username == null || username == "")
{
username = Credentials.GetIdentityId();
PlayerPrefs.SetString("Identity", username);
PlayerPrefs.Save();
}
//Check if this user has any bots yet (if they do that we don't need to do the first time setup)
string selectExpression = "Select count(*) From Bots where UserName = '" + username + "'";
var selectRequestAction = new SelectRequest { SelectExpression = selectExpression };
var selectResponse = SimpleDB.Select(selectRequestAction);