Oh gosh. Sorry about that.
It's a somewhat convoluted chain of sidequests so I expect most people didn't do them either. That said, only one person had this issue and they quickly solved it by simply following the instructions. Are you sure you're not just counting from the wrong room? Or mixing east and west up?
Either way, you can just save scum your way through, or follow the stones. (Yes, that's a trick that a few people caught on lol. Just go through the paths that have stones near them)
And don't worry, I'm Brazilian too.