

"Expected delivery: today by the end of day" but last update showed my mail at a different province???
I'm new to reddit so please bear with me.
On August 12th I paid for an Xpresspost delivery service of a very important document. It was sent from North Sydney (NS) to Guelph (ON).
My first update was that it was processed in Kitchener (ON) on the 14th, and on that same day I got another update saying that it was processed in Stoney Creek (ON).
Fast forward to today, August 17th, I check and I see my last update was that it was processed in Halifax (NS) ???
I'm so confused as to why it came back to Nova Scotia when it was supposed to be delivered in Ontario, and it's even more confusing when the tracking status shows that the expected delivery is today by the end of day, and I also don't have a message or anything that might indicate that my mail is being returned to sender.
Has someone experienced something like this? Or has any suggestions on what to do? I'm desperate as this document is very important for my college admission.