I'm not so sure if USPS is so generous as to re-direct the mail to you in Canada.
Give them some time to respond, they replied back to me in 3 weeks. I think they only have 2-3 active staff multi-tasking a multitude of jobs. In the meantime, you may wish to take up the proxy offer from Chocobo, making sure to tell the staff at the Rake to start your subscription correctly so you do not have overlapped issues.
I am actually pleased with the uptake of interested readers. I hope they continue with what they do for a long time.