Hey kashief drop cellity support a line at:
and we can look into the activation code problem for you.

cellity freeSMS and Communicator send messages for free over the dataplan. One limitation we have at the moment is that the very first 'Activation or download SMS' is sent as a text. We need to do this to verify the phone number (preventing fraud and misuse).

So for anyone thinking of trying it, download and activate while you are still able to receive texts before cancelling your text plan