Probably some sort of AI-driven auto moderation to cut costs at the expense of their users. Sorry that happened to you but glad you found your way here. I was one of seemingly few uses who actually left permanently after they killed the API after ~10 years of daily use. It's only gotten much much worse since then while Lemmy and Piefed keep getting better.
Check out Blorp and Voyager on mobile, and Photon on PC.
