It’s a wiki. It’s not official. Likely fan made, like all wikis. So it could include personal bias. I don’t get the Helena x Zack vibe myself, if that’s the shop you like, then go for it.
Eh, not really. I don't even ship characters unless it's love at first sight, and even there it has to have mutuality between two characters (no one-sided crushes, I should add) and there must be absolutely no past contradictions in their past characterization for it to work (ie, I don't want something like, say, how Alex Danvers up and out became a lesbian in Season 2 of Supergirl when she was not even hinted to be that in Season 1 in any way), and since there's nothing indicating that they have mutual loving relationships to each other (at most being one-sided on Zack's part), I see zero reason to ship them. And I'm guessing it's because Zack has Helena's photo prominently displayed on the dashboard alongside Tina and Niki.
Honestly, the only characters I might ship are FionaxOwner, MisakixOwner, and TamakixOwner, maybe NyotenguxOwner as well, and that's mostly because they don't exactly hide their affections for the Owner at all (I'd mention the others, but I can't exactly say they showed any particularly romantic inclinations to the Owner, at most just having respect for him, and in Nagisa's case barely even tolerating him, while those four actually did). Maybe also Niki and Zack, since they had mutual romantic elements to each other that can actually be discerned (Tina's disinterested in romance with him, and there's little indication outside the wrestling ring that she even has any interest in romantic couplings, though that being said, it's safe to assume she's straight, and as far as Helena, she doesn't seem to give much interest in romance at this point).
Let me put it this way, if any of the character were to each other what Ariel and Eric were from Disney's The Little Mermaid, or even Romeo and Juliet from... well, "Romeo and Juliet", that's a shoo-in for me to ship. Otherwise, I don't bother shipping.
If only the climbing fest available on Steam ver.
Oh, don't worry, we'll get it in the Steam version sooner or later.