Are you sure it is really FedEx? Definitely too old for tariffs. Probably too old for any claim against you. I’ve seen a lot of shipping related scams in the last two years.
I vaguely remember paying the duties and customs in cash to the driver, but I don't know for sure. This was likely the first international purchase I ever made that had a separate duties charge, and I remember being surprised by how much it was when it was delivered.