not sure if everyone knows, but with the update, nintendo fixed it so random matching works, but think others are too used to entering IDs for them, so I'm gonna post a few randoms here for others to join, most very easy.
Field: 5125JKJ - 40RKPC7 - 75GGLMV - 2DXB3V8
Plain: 6HY5BMF - 4L9XJ1T
Peak: 7V13KH3
Volcano: 4T6D2T8 - 54YCK63