Hi Mike,
There are no problems with our service. I see that you have opened a ticket with our support team and they will provide you with assistance there with regards to the issue you are encountering. Usually when you see "Request accepted. Beginning processing." but the emails do not send, this may indicate a problem with the HTML in the email template (for example a personalization field that references a custom field in CRM that we are not aware of if the metadata has not been published). Our support team can help to determine what the issue is.