OP has PMed me his three xpubs, which I have entered in to the tool locally and discovered an address containing coins which fits exactly with the story he has given in his first post.

The next steps will be for him to decide. Either we can help him try to set up the tool locally (preferred option!), or if that fails and if OP chooses then I would be willing for him to send me his seeds and password and I can sign and broadcast a transaction sending the coins from this address to another address of his choosing. Obviously any sensitive data being sent will need to be encrypted first, which will pose another challenge.

I'm posting this here in the interests of transparency.