I am terribly sorry, but your source is incredibly wrong. This is the only account I have on Runemate, my sole purpose here is to bot, not to take part in some kind of social activities Please look over the data you made your assumption based on.
I can see multiple accounts under the same IP as your own, whenever it changes it appears to be relatively close to yours.
I'll keep an eye on it, for now, I recommend using Two-Factor Authentication, because if you are telling me the truth, then your account is compromised.