insurance over 200.00 expedited from Canada to USA does that meant a signature is automatic?

[foreve-8287]

I sent an item value of 820 from Canada to USA. Paid insurance for 800 expedited and the buyer states they haven't received it but shows delivered on the tracking. Not sure what to do and also with purchasing insurance of 800 doesn't that mean a signature is automatically required? The girl at the post office did all the work as I just showed the address from my phone. I'm stressed out and not sure as I looked to see on the website. Heading to the post office tomorrow but mostly gonna get a run around answer like everything else. The item shows it was received Dec 28th but it's January 19th. Could the buyer be lying about receiving it? Thanks.

[pjcdn2005]

Expedited USA dirpes not have the option of getting a signature.  As another poster mentioned, Xpresspost US automatically includes it.

The buyer could be lying or the item may have been delivered to the wrong address. Ask the buyer to check with their post office as the package should have GPS showing where it was scanned as delivered.  

Canada post will sometimes pay an insurance claim if the recipient agrees that they didn't receive the item even though their is tracking showing delivery.   But there is no guarantee and they may not do that for international.