I am guessing it is Crown of Starlight by Cait Corrain based on the link the provided.

The API is not gone, and is still free for both “for non-commercial researchers and academics under our published usage threshold” and “for moderator tools and bots”

https://www.redditinc.com/blog/apifacts

There are several ways to add your personal API key to (modified) final versions of Sync, Relay, Infinity, and even Apollo on iOS to be able to continue to use those clients, however Reddit has changed how Reddit links work, so those methods are becoming more and more broken.

Look at this fucking shit.

That’s just privacy, not security.

Forgive the Amazon link

SkySiesta SNUG Travel Pillow - Head Support with L Shaped, Fiber Filled Sides. Patented Design. https://a.co/d/6cdbI2i