I got this from another forum.
It seem Transferwise now block transfer to mister tango ibans
It posted last January so I think if you are going to transfer money from mistertango to transferwise or vice-versa it won't work.
Why not try to ask this on Mistertango announcement thread from here
https://bitcointalk.org/index.php?topic=1972805.240The thread is not active but you can bump the thread and maybe someone knows if it is allowed to transfer EUR to transferwise from mistertango.