Did you look for new attractors?

Have you expanded your map and opened any of the chests?

Little boxes on your land with question marks on them. You have to click on them to open them and unlock new attractors. If there are attractors that you haven’t unlocked yet, you should be able to see them in the market under the “Attractors” tab. (I think you see a padlock symbol on the one’s you can’t open, and they’ll be grayed out.) See question #2 in the FAQ. Hope this helps.