If you find a bug, you can either post it on this thread, post it on the Discord, or email bugs@johnayliff.com. Please include a screenshot showing the full game window--most of the time that will give me everything I need to track down the bug. Also, before reporting a bug please check that you're running the latest version of the game, so you're not reporting a bug that's already fixed. (You can see the version number in the bottom right of the title screen.)
Spelling and grammar errors are bugs, although note that I'm writing in UK English so e.g. the "u" in "colour" isn't a mistake.