Thank you for this helpful information.
I did use a tracked delivery and so I was confident that it arrived there fine. I attached my W-2 and signed my return. I was mostly confused as to the lack of status on the 'where's my refund'. As you say, it may be that it has not even begun to be processed, and therefore is not yet listed as received.
I will continue to wait, but if I don't see anything by the end of the year I will start to get anxious!
Thank you again
