that was a cool brain teaser, and we enjoyed the time spent codebreaking!
sadly, we didn't really get what the clue was for puzzle #2 and ended up bruteforcing it, and also, the caesar cipher wheel being misaligned really screwed with some puzzles - fortunately we noticed that and made sure to correctly write down the letters, but it was a bit of an added hassle!
we liked the way the morse code guide was presented, though, even if we didn't notice the arrow to flip it at first (it blended in with the fax machine a bit)