You bought a keyboard and case.
You paid.
The seller has given you a tracking number.
Has the shipment reached Canada?
The tracking number can be used on the Canada Post website if it has.
https://www.canadapost.ca/cpotools/apps/track/personal/findByTrackNumber?execution=e2s1
You have 30 days after the last estimated date eBay gave you for delivery to file a Dispute and get your refund.
Are you the seller?
Did you ship before payment?
The buyer will get a very nice present from you.
Sorry.