The site sells a bunch of retrocomputing emulator products. It's not at all unlikely that some of this looks like hacking or R/E devices and fell afoul of some

The site sells a bunch of retrocomputing emulator products. It's not at all unlikely that some of this looks like hacking or R/E devices and fell afoul of someone's filter (or maybe they sell a keylogger or something unsavory that I just didn't see). The author, as others are pointing out, should hire a customs broker. This is a licensed professional who knows the process (and often the specific employees at the customs office) and can get answers to questions that can't be answered in stickers on packages. Or, if there's really a law enforcement angle here, they should call a lawyer. But HN isn't going to provide much help.