Another issue - crossing into Canada with temp registration?

Lexx wrote:
First purchased the trailer on April 10th. I still have not received the license plates or title yet.

You haven't said where in Canada you're going but here in Ontario you'd need a plate on the trailer to even take it off the dealer's lot. Tow it on any roadway without a plate and you'd be sure to be stopped. I've never heard of a situation here where any new owner left without license and registration for the trailer.