Contact

Spotted a mistake in a book, a tool that isn't working, or a rule that has changed? Email olyriongroup@gmail.com and it will be fixed in the next update: that's the point of keeping the tools online.

Press, rights and bulk orders: the same address.

Lost your unlock word? It's printed beside every QR code in your copy, and on the last page. If you bought the Kindle edition, the word is in the "Reader tools" section at the front.