Use your individual login url and email address to login. Please note default /wp-admin/ is usually changed to prevent bad manner robots from accessing the login.
Issues with forgot password? Sometimes email server (Sendgrid) configurations can lead to delivery issues with native wordpress emails, especially if they have no other purpose than this. Or sometimes Sendgrid adds lead tracking to email links which can also break down the links. If issues please contact firstname.lastname@example.org and we’ll reset your password.