At this point I think you just don't want to understand or is pretending not to. Complete game = full game = all 5 eps. If you buy complete edition now on steam you will NOT have to buy eps 2 to 5 because they are INCLUDED in the complete edition. The bundle with eps 2 to 5 simply exist for those that already own ep 1. Episode 1 itself is not being sold anymore. Evidenced in the link you posted as you can see the item value as 0. IF you pay attention the app id changed from 451636 to 1096570 which means a complete different game/content. The key for ep 1 doesn't match the content for that game/store entry anymore. It used to, but not anymore. It's not that it was simply renamed. You are not providing the content for which you created a ga for, because complete edition now means eps 1 + 2 + 3 + 4 +5.

But that's my opinion

ehhh, exactly...

And it's wrong, as it has been already proven by previous cases as I've already stated and given examples of...

A giveaway for a specific appid requires the winner to have exactly that appid in their library and nothing else. However the store page is named is completely irrelevant.

Again, add the 2 subid's instead and the issue is solved.

In essence the content promised in this giveaway is just appid 1096570

The "complete edition" part is just the store name the developer/publisher puts on the page. They could rename the store name for that appid to whatever they want while the game name (shown in Steam library) still being "Song of horror" (without the complete edition wording). When entering the appid (1096570) SG just pulls from the store name but not the game name.