Hello,

I wanted some help in determining an unexpected address generation.

I have been using a smartphone wallet on iPhone (bitwallet http://www.sollico.com/bitwallet/)  and have made past transactions on it. 

The most recent tx had been to the address on an exchange.

However, it sent the rest of BTC to a new address on same wallet which asks for a private key - I just have the private key for my old original address.

After talking to support they say the private key should be on there but I don't think they fully understand what I am trying to say. The new random address that was generated has the default name "My Bitcoin Address" with no private key.

How do I spend the BTC from this new address?

Thanks