Is it a U.S library card? Or a library card from outside the U.S (e.g., a German one)? That's not clear from how you wrote it. I believe it's a U.S library only

Is it a U.S library card? Or a library card from outside the U.S (e.g., a German one)? That's not clear from how you wrote it. I believe it's a U.S library only thing. Libby's own FAQ says it's U.S only but perhaps they just haven't updated it.