Hey! Just played through it, and it was a great experience — gotta love a good mystery, specially when I had to do most of the figuring out.
The only thing worth pointing out is that it was hard to work on the objectives without having the notes tab visible. I had to write everything down on a notepad to figure it out, but I think that having both tabs open at the same time would've been a great help. Regarding bugs, at one point I came across a bug that made the objectives tab look like I hadn't solved it even though I had, and it was a small distraction when I went back to it (the Text Messages one when the online orders weren't done already).
Otherwise, it was very good, and it was challenging but not impossible. Looking forward to your next mystery! ( ´ ▽ ` )