Problem in reauthentication in Google Site Kit

Actually there is a problem occurred with reauthentication.
I remember first time when I logged in first time it successfully logged in. But cause a problem in my site log out then after new setup now it’s not log in. I tried different Gmail account. It work but I tried my older one again it’s still not login. And now second one is also not login. It mean there is issue when trying to reauthenticate.