Sorry to hear about the illness, Covid needs to be taken seriously. There are numerous password apps available, many of which are free. I use KeePass on my PC. My family knows the master password which gives them access to pay all the bills.
The protection from liability for a forum which facilitates the solicitation of illegal activity is yet to be fully tested. Frankly I don't see where it's beneficial for any website to test the limits of current protections. But obviously that is a decision which is not mine to make.
And very possibly the website which allows and facilitates it. Remote as that may seem to you, it is a real risk in this litigious world. Obviously you feel differently and certainly that is your right.
"They would assume all legal risks for committing a forgery. " Just because you state that doesn't make it so. That would be up to a court to decide, thus the possibility of liability does exist for the forger.
I simply stated my opinion regarding requests such as yours. You posted to me and then I replied to you. Responding to a post is not harassment.
I am quite able to assist but I don't alter documents for people, I consider that to be forgery.