Icon Font Collection Escape

[Mistery]

A Japanese room escape game by norm-nois. Good luck!

Play Here

Please use spoilers for hints and walkthroughs:
[spoiler=Title Here]Enter text here...[/spoiler]

Please do not post a video walkthrough for 7 days.

[Mistery]

Brute forced
icon > icon > icon puzzle

Also got through the first door. Trying to solve the math puzzle hidden in the

wall

Stuck on the puzzle on 2nd door aswell.