Thanks for the feedback!
Assuming you're talking about the same softlock issue as someone else told me, in levels 3 & 4 there's actually no softlock, you just need to flip the already flipped on switch, to return the opened door thats marked by a transparent blue and red rectangle, probably should've made that more clear, but here's what i mean by the already flipped on lever on level 3:
https://imgur.com/e7eFIaG