I like the idea and signed up, but the first thing I see is a prompt to purchase credits. I don't have a use-case to try this now, so I won't be using the service again, however I couldn't find an account dashboard to delete my account or even sign out?

Hey, thank you for the feedback, if you click on the profile icon in the top right there is a "Sign Out" option. We don't have a delete account option yet but I will prioritize it.