I myself is leaning more towards that his account is also sold rather him being alive and kicking. The selfie he sent as a proof of life barely looks like him and his reasoning about the money donated for him for his medication is really out of his main goal which was covering all the funeral expense he is asking for donations in the first place, he didn't talk about any him fighting his sickness so I really wonder who is using all of his account. Probably a close relative have managed to know all of his passwords after he passed away?