I think what you tried should have worked. I'll see what I can find - it may be due to the way the bundle pages are set up and the way that my code is set to scrape.
I'm going in with the assumption that you want to scrape something like this: https://itch.io/b/520/bundle-for-racial-justice-and-equality
It's maybe the only bundle I've ever bought, and it's absolutely massive - so I hope that if I can get it working there, it will work anywhere lol.