In all likelihood, those funds are lost.
BTC-e is dead, so your only hope is to contact the Wex.nz support and see if they can assist. Chances are pretty slim that they'll be able to recover the funds, and their support seems fairly overloaded and slow to respond.
I don't think Wex.nz has direct access to the old BTC-e deposit addresses... It seems like they only have access to a limited number of cold storage addresses... As they were only offering something like 50% recovery of funds last time I looked? (And that was by way of a "token" not actual BTC)