There are two ways you can get set up with a password in Kadence if your invite has expired.
A global admin in Kadence can resend you an invite by doing the following:
Go to Directory > Click on your profile > Click on the three dots in the upper right-hand corner of your profile > Resend invitation
You can send yourself a password reset invitation by doing the following:
Go to https://login.onkadence.co/ > Click on "Forgot ?" in the password field > Enter your email address > A password reset email will be sent to you