Are you playing from a cafe? Apparently, there's no possible solution as of now due to PAC account issue. The only way to change your password is via PAC since we are not left with it, sadly, no other choice.
Also, do you share your PC with anyone playing VC-MP? LW provides you with auto-login option, maybe due to that, you didn't login in all this time and probably forgot your password, lol. This happens with me usually, please try logging in again, might work.
According to the logs, your UID has been changed. So, you are falling in the latter category, I assume. Most probably, you forgot your password.