Once I realized the interviews were done by real people, I realized that would be the case. I was looking around to see if that was something that could be done on their site. It looks like it isn't but I found the following in their FAQ [0].
>If you need a place to start, we heartily recommend Interview Cake [1]. There, you can work algorithmic problems at your own pace and get nice hints as you go.
I wanted to post it here for anyone else wondering the same.
[0] https://interviewing.io/faq [1] I don't want to put the link here but the link from their FAQ does appear to be a referral link, or at least some kind of coupon code. I have absolutely no affiliation with either site but if you want to support this site then I'd recommend checking the FAQ and getting to Interview Cake through there.