Yesterday was Sunday.
He may not work weekends.
Your second contact, if he doesn't respond to the first, should be :
"When was this shipped? What service was used? What is the tracking number?"
Now.
Do you back your Paypal account with a balance or a credit card? Or did you draw from your bank account?
If the latter, you wrote an e-cheque which must clear both the Canadian and the American banking systems before the seller gets paid.
This can take as long as 10 days. Usually less, but still.
Is the seller new?
EBay has restrictions on new sellers and on sellers of highvalue/highfraud items.
One of those is a Hold on cleared payments. A Hold of up to 21 days.
Some new sellers decide they can't (or won't) ship until the Hold is lifted. This is not allowed.
If your seller can print a Paypal shipping label, your purchase can be safely shipped.