So, I'm loving this so far. The look of everything is smooth (movement-wise) and appealing, with the art style itself reminding me of indie games I've loved in the past. The writing's wonderful. The puzzles are mostly simple but fun.
The Devil's Snare puzzle in particular was great. The witch's emphasis on how only parts of the letter were odd made it quite clear that it was purposeful, so I immediately went and started up two strings for the typos – one for what letters should be there, and one for the replacements – and once one of them came out to 'think' I discarded the other and got right into solving it. Took effort to find the seed but I enjoyed the whole little journey, and I found the backstory of that one and how it was getting into the witch's head to be especially hot, to boot.
The only one I was a little dissatisfied by was the bimbo one. When the author mentioned a 'smelly' ingredient, my hopeless trivia-brain immediately leapt to "Ah, Mimbulus Mimbletonia excretes Stinksap!" When cupid-mimble-mimble didn't work I sat there going through all combinations of that before I realized that you probably just meant the sulfur.
As far as actual issues, I've got two textual errors for you.
1. The first is a minor one that's sort of been brought up already, but it's a small matter of consistency at this point: in the bimbo success's text, you close it off with "Heading over", without any sort of em dash to interrupt it like you've tended to put at the end of other story pages. That made it so with that one specifically, I really had to wonder if there was, like, a line that was failing to display for me, or something. I see you plan to add multiple pages, though, so maybe it's moot at this point.
2. The first sentence of the story page for the lesser flight potion has an uncapitalized 'hermione' that didn't get replaced by the custom character name I'd picked.
Really minor stuff, though. You've executed a simple premise beautifully and I can't wait for more.