This incident was resolved yesterday afternoon and we have been in touch with the affected clients. If you have any further questions, please drop us a line.
We have tested and released a fix for this issue. Message sending has been resumed. The initial duplicate sending problem affected a small number of clients. If you were affected, we will be in touch shortly.
We're very sorry for the disruption this morning; we will continue looking into this incident to make sure we can avoid any similar issues happening again in future.
Please contact support if you have any questions.
We have paused text message and email sending while we investigate some duplicate messages being sent out by the system.