WEX sent me the follwing support message:
Dear users,
Many of our users are asking about fiduciary funds that should have been transferred to the BTC-e exchange through a payment service provider Moneypolo. This is a legally complex issue and we -- WEX -- are not BTC-e proprietors. WEX bought out the user base, for this reason we count on your understanding and cooperation.
The question about bank transactions worries not only you but some other users too. We have referred to lawyers who responded that only the payment agent notifies its users about the flow of their funds, you have the right to request detailed information about the account and the bank where you money was transferred attested by the payment agent. Any payment service provider should be answerable before the user for the flow of their funds.
Best Regards,
WEX Support
Although it does not help much...