I thought for some reason that it would allow access to the game on itch during the 100% off sale but not include the Steam key. In any case, I didn't event generate that many keys for steam, does this mean that I need to generate more? I feel like this could be more clear on the site but maybe I'm just a dummy
I disagree with redonihunter. Your message says if you "purchase" the game. If you get it for free, you didn't purchase it. So you have a loophole to not allocate Steam keys to people who got it on the 100% off sale. You can export all your purchases as a .csv file and isolate those who paid money for the game.
The game has no minimum price. It is pay what you want. If this was so at the time of the sale, what was the point of the sale?
People could have gotten it for free anyways, sale or no sale. The only thing a sale for a free item does, if you give "100%" discount, is to give people purchaser status. Once you have purchased status, you keep that, even if the price goes up.
Did you by any chance mess up your minimum price?
Also, check your terms of service with Steam. You can't give away Steam keys for 1$, if you sell the game on Steam for 10$, or whatever price.
You currently have pay what you want. This means, that any price paid, any at all, will give buyers permanent purchase status, including a Steam key, as per your advertisment promise in the game description.
I would tidy up and future proof the pricing situation and calculate your sales as promotional "expenses". I guess that 90% or more of those people would not have bought your game anyways. But now they might contribute to give you some release time reviews and ratings. As you might have planned all along with your sale.
You should thoroughly study https://itch.io/docs/creators/download-keys . Somewhere there or in another info it states that if there is a limited amount of Steam keys, players trying to claim one will get a message to try later.
I do not know any data about this, but usually people do not come here explicitly to buy Steam keys. There are other dedicated shops that sell Steam keys. Of course, they might activate the game on Steam regardless, but not all people here have a Steam account to begin with. But yeah, at the latest for your release you should stock up on some keys. Also, as I said, anyone that did contribute a dollar is also egible for such a key. And of course the people buying the game after release. But if you do not need to wait two weeks to get new keys, you can wait till you get a message from itch, that your game lacks keys. At least I assume you will get informed that you offer keys, but run out.