Unable to send emails using SES via SDK

Hi,

I keep getting this error while trying to send emails using PHP SDK.

<Code>AccountSendingPausedException</Code> <Message>Sending is paused for this account.</Message>

While my account shows no such limits. Contacted Support as well and they replied back saying.

"Thank you for contacting the Simple Email Service team. I have confirmed that your account is active and able to send email in the Asia Pacific (Mumbai) region."

I have also made sure to check if the region through which I am sending is correct. Lost on what to do further.

Any assistance would be great!