I checked the links and they all work on my end. Getting a javascript void error would be an issue with a website or a browser. It could be something like a pop up or ad blocker interfering with the download window. It could also be caused by clicking the links through something like an email sent from itch instead of the main download page here. I'd try a different browser first, but if that doesn't solve it you can contact itch.io support https://itch.io/support
Worst case scenario I can send you links directly but you'll just have the same issue on every update so I'd suggest going through support to figure it out if using a different browser doesn't work.