I tried to purchase several books today. They showed up in my library, but would not download. I then checked my email and received this message:" If you received this email for a Barnes & Noble ebook, please be advised that these purchases are limited to those customers physically located in the United States and Canada." I live in the U.S. I don't understand this. They also give a number to call, but they are only in Mon-Fri. Any suggestions?
I'm assuming you currently are physically in the US? You could try rebooting the device. I seem to remember someone with a Nook having this problem sometime last year, something about her IP address showing as a foreign address. You might also try going to a local hot spot and try downloading from there, if it works, then it's an issue with your WiFi at home. Or can you get to a local B&N and see if you can get help there?
The OP could also try rebooting their router at home to get a new address from their ISP, but my best guess is that BN is checking a database to tie IP addresses to location, and an entry in that database is currently claiming the OPs address is in a european netblock.
Sprint in particular sometimes has addresses that look if they are in the RIPE address space but I've seen it with other ISPs as well. I think it's because there are European companies or branches of companies reallocating unused addresses to US businesses.