Oh good, or no blatant bug at least. It's saying you need to finish 1 To-Do in Habitica by midnight or pay $0.
Wait, I think I was just thrown off by "Beeminder says I owe 1 dollar" when you meant "Beeminder says I owe 1 To-Do" and you're saying you did the To-Do and Beeminder's not picking it up... So that's a potential bug or some kind of problem!
Could you email firstname.lastname@example.org and we'll figure out what's up with this? There are a couple rules and caveats about which To-Dos count... We'll of course make sure you don't derail due to any technicality like that.