The money and ownership answers first, because those are the ones worth reading before you start.
They come back. Credits are debited before the provider is called, and if the provider returns nothing the full amount is credited back as its own entry. Nothing is edited after the fact — you see the debit and the return side by side in your ledger, with the job they belong to.
You do. On any paid plan the licence is commercial, so you can sell and publish the output. On the free plan the work is yours to keep and share but not to sell — that is the one thing a paid plan changes about rights.
By plan: 30 days on Free, 12 months on Starter and Pro, 24 months on Studio. Anything you download is yours to keep for as long as you like, independently of that.
The file is deleted and the lineage record stays as a tombstone. Its children still show that they came from it, and what prompt and model made it, but the image or clip itself is gone. Deleting a parent never deletes its children.
Not here. Prompts and references are sent to the model provider that runs your generation — kie.ai or fal.ai, named on every job — for the sole purpose of producing that result. This studio trains no model of its own on your work.
Write to support and include the job id — the short j_8842 code on the job's page. With it, a person can see the same event log you can, and the answer usually takes one reply instead of four.