Hello @mail,
My name is Henry and I am happy to assist with your inquiry, and appreciate you contacting LastPass Support!
I am sorry about the issues you are having with your account. Our records show there has been activity in your account again. If you still can't access, it seems you recently changed your Master Password. If you still remember the old password you can also revert the change to log in with the previous password instead.
Thank you,
Henry | Customer Care