I've been having this problem for the last couple of months. Correctly using my (altered several times) password that I don't use anywhere else. The attempts come from the Isle of Man. It could be any of 3 different devices that have been compromised. I've run 5 different keylogging detection programs on my machine and get nothing, so wondering if it's a Chrome extension exploit?
To clarify. This has happened several times of late with my account, even after having changed my password, that is exclusive to LastPass. LastPass successfully catches the invalid attempts (I also use 2FA), but still, a bit worrying.