There are geomining limits placed on each geotile, per user, per hour. This is to help encourage users to contribute varied data to XYO Network by requiring that they spread out and gather data from many different places.
While earning XYO in the COIN App, you may come across an error message telling you that you have "exceeded the maximum number of re-mines per hour".
COIN is both an introduction to XYO Network and a major contributor to its data pool, so it's important to make sure we're receiving a wide variety of location verification data, rather than very similar data repeatedly. Good data is key to the function of XYO Network.
If you find yourself hitting the limits, let your phone cool off a little and then go out into the world to see what data you can contribute to XYO Network!