Apple ID password
When I try to upgrade some applications, system ask my apple id and password. When I enter my password, it doesnt accept it. System is sending me a code on text saying that I should type this code followed by password. After I do this, this time it's saying you entered wrong password more than once. So what should I do? I would like to upgrade my applications and I am not able to do this, please help me sort out this problem.