Looking at your grandfather's profile, Grenièr-1016, you have not worked on it for three years (since 2017). WikiTree is a fast-growing, evolving site which is based on volunteer input. As I said in my answer before, if you did not reply to somebody's request (for instance, to be on the Trusted List) or other form of contact, the Team may well have decided you are no longer interested. In this case, they would have orphaned your Public and Open profiles.