I noticed something about the digital codes included in the Essentials Kit and I thought I might save people some frustration. In the font the codes are printed in, an uppercase i is almost identical to a lowercase L. The i is slightly shorter and a tiny bit thicker than the L I could only tell the difference because the two were right next to each other in the code I got. If the site won't accept your code and it has an i or an L in it, try the other letter.

Good tip.

One thing that I noticed about the codes that might be worth bringing up... the hypens matter. With some websites, the hyphens and spaces are added for readability, but you aren't required to type them in. With these codes, they won't be accepted without the hyphens. It's a small thing, but I thought it worth mentioning just in case.