I'm stuck on the PlayTile version. I have no idea what to do here. The arrow puzzle seems like you should pick two symbols that make the center one, but this set has a symbol on the right that has more lines than the center one.
**Edit** I can't upload the screenshot. It's the room with 3 levels that show 3 different sets of 2 symbols. One is a double headed arrow, one is a hash sign and one is a half circle. It's after I escape and I think near the end