Chalk Admin Error "Temporary password has expired and must be reset by an administrator"

Hi,

My customer signed up for Chalk promotion admin account, but cannot login to Admin page, even after resetting password.

Tried below's step from another community posts, but did not work for this customer.

• Select link in email invitation
• Log into Chalk 

• If password is unknown, use the 'forgot password' option
• Reset password
• If  re-directed to the Admin Center, do not try to log in
• Close window, go back to invitation email, select link again
• Log into Chalk