Thanks for your help David. I have removed/reinstalled KPC2 with version 1.26x then redownloaded 2 books. Then installed DeDrm 7.2.1 and followed instructions. I must have missed something though as no conversion seems to have taken place. I tried adding just the .azw file to Calibre then I tried adding the 'voucher file' (though I have no idea what it is). It was at this point I realized I must me missing something.
Pardon the ignorance but I'm not sure what to do or what went wrong. Any advice greatly appreciated. I've attached screenshots showing what I'm seeing.
Thanks for your help ~
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(please note images are posted using imgbb. I'm not sure if they have adverts NSFW or not!)
https://ibb.co/hc33djb
https://ibb.co/4KV9nW7
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