I thought so too. But after that I do not trust him. There is a concern to keep safe my btc. He would say that my email had been hacked and that is false. I'm not a esperto in computer security, but the attack has oil produced from their website. If really the admin is an honest and responsible person, will add two authentication factors so this problem does not happen again. But if it does not solve this, nothing good can be expected from the
Don't use your email password in all sites...
If is not this case, your computer is very infected by Spywares...
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Aprenda a não usar a mesma senha do email em tudo que se cadastra...se não foi esse o caso, então seu PC está sim infectado!