mac app store two factor authentication problem at macOS 10.10.5

I am using two factor authentication to very my account on all my devices. But i can't access to mac app store on my old computer running macOS 10.10.5. When I want to download something from mac app store i enter my password, then i receive verification code to my phone but on the computer the window that i need to write this code does not appear. What can I do to use mac app store to download apps?