I updated Seasonality Core to version 2.9 to fix Particle Mode (to use the new Grib Filter server that Seasonality Pro now uses). I removed it for sale from the App Store, so you can download it free from the website directly:

https://getseasonality.com/core/

I gotta say, it feels liberating to be distributing Seasonality outside the App Store again. No more stressing about App Review.