hello, i have a problem with my iPhone and mac iMessage configuration. i cant configure iMessages to my mac. when i try to use my apple id for my mac iMessages i get error: "you cannot sign into iMessage on this mac at this time" and i get customer code and message to call to apple. when i try my friends apple id, iMessage works on my mack. i try my apple id on his mac, iMessages work. sound crazy. on my mac my apple id not working with iMessages. can anyone faced this problem? maybe some advices how to solve it? if my mac had a problem, another apple id will not work too, but it works. if my apple id will be bad, it will not work on another mac. im messed up. any help will be appreciated.