Support

Contact Postnilo at ceo@mark17.co.kr for product, connection or data questions. Include your account email, the affected channel or post ID, the time and the error shown. Never send passwords, access tokens, verification codes or payment card numbers.

Sign in using one of the methods shown on the Postnilo sign-in screen. Signing in to Postnilo, connecting an AI app and authorizing a social channel are separate steps. Check the account and workspace before approving access.

Use an existing library item or select files in the upload widget. The service limit is 512 MiB per MP4 and 20 MiB per image, with additional platform limits. Wait until server verification finishes. If the chat cannot show the widget, follow its web upload link. For an expired session, open a new upload session.

Find the reservation ID in your calendar or the AI result before retrying. If a scheduling response was lost, check that same reservation instead of creating a new one. In-progress execution, an unknown result or partial success can prevent cancellation. Delivery to a TikTok inbox is separate from publishing in TikTok.

Manage connected AI apps separately from social channels. Revoking MCP access stops that connection from making new requests; it does not delete the social channel or previously published content. Use account settings to request Postnilo account deletion, or contact support if you cannot sign in.

See the Privacy Policy for details of usage statistics, stored content, retention and deletion. Contact support with questions or requests about your account information and activity records.