It should still be available to purchasers. I think its something like you need to go to your own user profile library to access purchased files. I'm not sure how we'll handle updates going forward for now, but as I'm still trying to get the next update bugfixed it isn't an issue until I can get a stable game version. I'd assume I just update the game files on here and people with access can get the new stuff.
Viewing post in Game Update - Voluntary removal comments
I have it in the list of owned games, when I click download I get directed to the usual file download page where I used to download it, but it says "Nothing is available for download yet.".
Maybe the file got removed by accident or it just simply disables all downloads when it is not available for purchase?
It could be because I removed payment processors from my account.
The issue is that itch said any games removed permanently will trigger refunds for all purchasers. With the best will in the world, I couldn't risk them suddenly dropping $5k of refunds on me, so I disconnected paypal.
I'd recommend joining our Discord and I can sort out access without itch.