I am still receiving the same error in the exchange.
New Exchange
1 error prohibited your exchange from being started:
Failed to validate return address
It is a correct and functioning NXT address..
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send your nxt to a real wallet and not use the polo wallet to make the exchange
i do not really get that.
NXT has its own official NRS online wallet and so an account.
In trying to set up an exchange it ants a reverse address to send the NXT back to if an issue.
I cannot even set up the exchange as it looks at this NXT account address and says it is not valid.
Shapeshift should be able to do this as it is already integrated into the NXT wallet.