iKeywi 2 questions

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I bought iKeywi 2. I can not figure out how to customize what buttons are on the extra row that iKeywi 2 adds at the top of the keyboard. I went into the settings app and found iKeywi 2, but don't know what to do from there. Also, I have left the settings at the defaults for now and sometimes my top row has numbers and sometimes it has symbols and punctuation marks. Why is this? Please help. Thank you.