Hello dear community (& staff!)
I writed an email through contact form but no clear solution.
Some months ago I got the chance to see your Bundle of software available for fair price at Humble Bundle and so I bought it! Some weeks after (today) I wanted to use these keys, downloaded software and activating but it says the keys are invalid...
Is there something I missed, some actions to do? Of course you can ask me in private the keys as proof I'm not cheating...
It says I have also to give the email adress, which I did. Thank you to solve this, else, it would have been 15 dollars (or more, I don't remember) lost for nothing 
Olivier