Mar1usM: Hello. Just to know I tried every posted coupon code to redeem for "All-time high discount on Ubisoft classics (from - 80% to - 85%)" and I was getting error from every one of them - "This code is currently being redeemed by someone. "
That means coupons are not activated. Somebody or bots just blocking keys to activate. If keys would really be activated, I would receive a message "The code was already used."
The only key worked from user "Ice_Mage". He/she posted as code as link. My guess links cannot blocked like plain codes with changed letters.
Maybe in the future everybody, who doesn't need a code, should share their code in the link form, not as plain key with changed letter. Because these codes with error message - "This code is currently being redeemed by someone." - eventually get vanished and nobody can activate. I tried to check the keys again and it is the same problem.
I have an opinion on what you wrote: Those key that you used has expired, that is why you cannot activate it. This may be the point.