he or she left their Bitcoin address: 16NXk2eFiCRLhgoBZkXwyvptBvxZvHDibS
is a start!! and you dont seem to be helpful like the others.. dont waste your time here
Naive. I'm trying to help you. To make you understand. There is a very slim chance to know who he or she is by that Bitcoin address. Basically, it's useless and will not help recover your account.
Anyway, since you said that you already messaged the admins and assuming that includes proof of ownership i.e. signed message, then all you have to do is wait.