Most of it is one of these eight things

Open Activity → Collection builds. If it says the write did not stick, or that a source failed, the build was working from a partial picture — and a run Kustos does not trust never removes anything. The next clean build puts it right.

Two ways, and neither of them needs us.

• From anywhere: open Manage billing and enter the email you paid with. Stripe emails you a one-time code — no password, and your server can be switched off.
• From inside Kustos: Settings → Subscription → Manage billing.

Cancelling runs to the end of the period you have already paid for. You can change your card or download an invoice from the same place.

Ask in the community, or send a note. Mention which screen you were on and what you expected — the Activity record usually settles it in one reply.