I get the same error when I accidentally downvote (I often slide too far since I’m on an iPad) and the instance I’m on definitely has downvotes disabled.
Ok cool. Probably an issue with that then. When you sign in, I'll query the instance to see if downvotes are disabled and if they are I'll disable them in-app too. Can't promise next update but I'll make sure it gets fixed.
Agreed about the downvotes. I’ve seen few, and it’s usually outright trolls. I’ve seen good discussions too, despite disagreements, it’s all generally positive. I hope it stays this way.