And please answer the question in post#2, where did you stored your 12-word seed phrase? <-- must be the issue.
He already did... it was just a bit hidden in the "bad" quoting:
the seed phrase is written on a piece of paper and is hidden in my personal safe. no one can access her. besides this, I specially changed the word order on paper, the correct order is known only to me.
Like I said, if everything he said is true... it's very puzzling and concerning.