NYU Tandon School of Engineering Transcripts for Grad School Admission

I have recently completed my application to NYU Tandon for an MS in CS Program. I keep getting emails from the adcom saying that they haven’t received my transcripts (which was supposed to be mailed to their Processing Centre in Canton, MA). Although the courier website (DHL) states that they have sent it and has been received by the center on the 2nd December 2019. Is this just a processing issue? What are my next steps?

I’d send a screenshot of the tracking info to the adcom and follow up by a phone call.