A build that fails does not use up a creation. Cancelling takes effect at the end of the period you have already paid for, and you keep what that period includes until then.
That you wrote, own, or have the right to use whatever you paste and upload. Nothing illegal, and nothing intended to pass itself off as somebody else. We may close an account that abuses the service.
It reads your text aloud in a synthetic voice and packages the result. The voice is generated; your words are not rewritten. Subtitles are produced by machine transcription and can misread an unusual name.
Files are removed on the schedule in the privacy policy. Download what you want to keep. The service is provided as it is, without warranty. We are one person and a small server, and we will tell you plainly when something is broken.