Someone is to be held accountable here. I am 99% sure there is not even an option to have your ehobby order 'signature on delivery'. Either someone new at ehobby sent it with a typo or Canada Post messed up.
Although I do believe this is why couriers offer insurance. I don't think you will get anywhere with Canada Post because they are just overpaid cunts. Probe ehobby to resend the package (since it is going back there anyway)