That’s great, send me an email at support@sweetpproductions.com and I can send you a license for the store version

I had issues with migration assistant when upgrading too.
😞

If you want to delete absolutely everything, uncheck everything.

Safari has changed the way it manages cookies on Mojave, and it seems that removing them while safari is open is not super effective anymore.

The best option is to now remove them when Safari is closed.

If you just move it to the trash,
open the App Store, log in to the account you purchased Cookie with.
then go to your "Purchases" tab,

you should be able to re-download.

this version doesn't include the Safari fix.....
http://cl.ly/1S312I460v3H

that version does