Hello :) welcome back and thanks for sending the key :)
Just now I woke up and I immediately redeemed it but I got a warning message saying : An unexpected error has occurred. Your product code has not been redeemed. Please wait 30 minutes and try redeeming the code again. If the problem persists, please contact <a href="https://help.steampowered.com/en/wizard/HelpWithCDKey">Steam Support</a> for further assistance.

ok , I tried a second time ( waited few minutes , like 2-3 only :P ) and it works :D
Thank you very much for the key and fast reply :)
Have a nice day and my best wishes for you :)