I sent via Canada post with signature to the other address and received the signature by Mahmood.
But they took like 15 days to update their tracking system.
Huh! Well I had no idea that's what courier meant. Thank you.
Anyhow, my application made it. So for anyone unsure… I sent my package to their "non courier address", via Canada Post, next day delivery, with tracking and signature. And, it made it!