Hi there!
It's been a long time since we didn't check the forums :/ We received emails recently and we contacted Valve to understand why the "Owners of Blocks That Matter receive 25% off" was not working even if the sentence was still on the Store Page.
Here is a quote from our Steam manager:
"The loyalty discount was removed at the start of the Summer Sale, as it would have conflicted with the other discounts. Unfortunately, the tagline was in a separate system, and was not removed as part of this process.
Weve moved away from indefinite loyalty discounts, as we stopped seeing the benefits after a few weeks, and complications like this would undoubtedly arise. I would recommend against reinstating this discount, and continuing to use weeklong sales to help promote the game."
We were not aware of this removal
We apology for the wrong info in the Store Page.
Guillaume