Coordinates shared by other people will only work properly if you both have the same mods installed. Elithian Races modifies planet generation systems and adds new settlements to the mix, so there are more options for the game to choose from. If someone else is playing vanilla only, their game may generate a Novakid settlement, but with ERM installed your game may instead place an Avikan settlement there.

Novakid settlements should still get generated on other planets, but you'll have to do some exploring of your own. Coordinates you find online may work in some instances, but they are only reliable if the other person has the same mods installed.