Anything at all — bugs, questions, a template you wish existed: support@kythli.com. We read everything and reply within a business day.
No. Sign in on the new phone and restore — your recovery key (guarded by your password and 2FA) unlocks your backup.
In the app: Household → Invite. They accept by email, and your shared focuses appear on their phone. (Sharing is a Kythli Family feature.)
Your account → Plan → Manage. Cancellation is immediate at period end; nothing is deleted.
Yes — every card, every focus, from the app: Settings → Export. It's your data.