After some more testing I have to juggle the flames into various spots and in weird ways in order to trigger the door opening. I took a video.
The way you solved it is actually the way I intended it to be solved, you need the regular fire on the door switch so that the soul fire can be back in your lantern, the fire juggling is part of the mechanic, I wanted to go for a sort of puzzle solving route with the fire juggling. Thanks for the feedback again! I intend to improve the UX /Tutorials if I decide to work on this project further I think that's where there's confusion between my design and the player.