Some one is trying to hack your account i think. Scan your computer with kaspersky. Enable 2FA. Change your password, move your coins to some place else. I wouldn't keep them in that pc's wallet btw.
Malwarebytes anti malware found nothing, and Bitdefender didn't either. The thing is, if I did install a virus by accident, I'm sure my Electeum btc would be gone already. I also don't see a point in adding 2FA in my YoBit account, since no coins are stored there and they probably never will.
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it has nothing to do with your computer and whether it has malware on it or not. your username (or email i don't know what they ask for reset) is leaked and until your email password is not leaked you are safe.
remember that anybody can request password reset just as long as they have the name but it will not reset until you click that link in email.