Funnily enough i just done the EXACT same thing, i bought Secret World via CJ Keys, the same as you i got emailed a Code, put this in, played fine for a week or so and decided the game wasnt for me and never went back.
Like you recently the game got changed to B2P so i decided to try it again, logged into my Funcom account and see no key attached to it, odd i thought, i had my previous email with the key, tried it, didnt work, noticed the key was via some Autokey thing so i tried that and it didnt work, however this seemed due to the system being changed i think after i had bought my key, i think they changed the way the autokey system worked or something a month or so after. So i emailed CJS Keys the following
"Hi Guys, trying to retrieve my key for The Secret World which i bought from you guys, unfortunately cos the order was so long ago i think the Autokey thing doesnt work now? Can you please sort me my key out. Thanks "
Got a Response the next day
" WXXXXXXXXXXXXXN .... YOUR NEW ADDED KEY IS XXXXXXXXXXXXXX
Keep safe, we do not normally store keys that have been sold.
CJS appreciates your custom. " (replaced the actual keys with X's
)
So it was fairly positive for me, im sure you can probably get them to sort something.