I tried to transfer xcp from blockchain address to counterwallet. I take private key from the blockchain BTC wallet under the option " Export unencrypted". When I imported the private key to counterwallet, it shows "Not a valid private key". Anyone know how to solve this problem? Many thank.
You need to export unencrypted and Bitcoin-Qt format.
YES, I export unencrypted and Bitcoin-Qt format. The blockchain address has more than one BTC addresses, is that the problem?