Im sorry only he and his own doctors can tell you what is wrong with him. sure we can speculate all we want by saying to you he has this or that but that doesnt make it so. what I can tell you is that maybe because he spent all that money you posted about that he didnt have the money to pay for his cell phone. the fact that he said to you he needs time alone says to me that he does not want any contact from you so he is protecting himself from your urges to do so. (for example you wouldnt know he blocked you on facebook or that he blocked his cell phone from you if you hadnt tried to contact him when someone is blocked they dont get a notice saying dont contact this person because they blocked you , only after contact does the one forbidden contact recieves the message that their contact could not go through because they were blocked)

my suggestion is to leave him alone, he said he wanted time to be alone so its time to respect his wishes to have no contact from you.