Yup, it's not possible to get to the ending anymore as nothing seems to make the missing sigil show when starting up the map. I've tried removing the clutter present in the unlocking script file, but didn't fix it. No idea what is going on really.

The puzzle itself still works fine though, it's just that the final arranger cannot be solved anymore.

Nice map.
Got the 2 sigils and the 3 stars, but I lack 1 sigil for the final door.
And I can't get the map to start with 1 sigil as mentioned by Wissaul.

✌️

Nevermind, it was some kind of bug. I just re-downloaded the map and started the game with one sigil.

Unfortunately this map cannot be completed because it requires three sigils, not the two that can be found