I have LastPass on two computers, a couple days ago one of them logged me out, which isn't unusual, but when I went to log back in it kept telling me my master password was wrong. I was still logged into my other computer and went to that one and update my email (since I no longer had access to the old one). It required me entering my master password multiple times and I verified I definitely had the correct Master Password.
It let me update my email and enable Microsoft Authenticator, but then when I updated my email it re-encrypted my vault and now the computer that was logged in says I'm typing the wrong password.
I changed my password last in 2017 and verified that's what it said in my Account Settings. Now my account is suspended for too many attempted logins.