Contact Us

Email

daokunge@gmail.com

That inbox is read by the people who build and maintain the tool — there is no ticket queue to get lost in. We read every message, and most replies go out within two business days.

What to include

A short, specific message gets a fast, specific answer.

• For a failed or broken download: the original file (PDF, PPTX or MP4), your browser and operating system, and what you saw instead of the cleaned file. If the page showed an error, copy the exact wording.
• For billing: the order number from your payment receipt, the email address on the account, and the date of the charge.
• For a refund request: the order number plus the reason. Refund exceptions and the 7-day window are set out in the Terms of Service.
• For a privacy question: the email address on the account, and the specific data you want to know about or remove.

Please do not send files you are not authorised to edit. We only need the original to reproduce a bug, and we delete test files once the issue is closed.

Common questions

Do you keep the files I clean?

No. Processing runs in your browser tab; the file is never uploaded. The only thing we receive at download time is a small record — file name, size, a one-way fingerprint, credits charged and a timestamp — used to charge once and to answer billing questions. It cannot be used to rebuild your document.

Why do I have to sign in to download?

Because a download is the only part that costs credits, and credits belong to an account. Processing itself needs no account and no sign-in.

Can I get an invoice?

Yes — write to the address above with the order number and the billing name you need on it.

Do you offer volume or team pricing?

For large one-off volumes, contact us before purchasing and we will tell you what is possible. Credits are sold as one-time packs; there is no recurring subscription.

How do I delete my account and data?

Email us from the account address and ask for deletion. We remove the account, its download records and its credit balance. Anything already downloaded is outside our reach — as it always was, since it never left your device.

The tool did not remove the watermark. What now?

Check that the file is a NotebookLM export — a PDF or PPTX slide deck, or an MP4 video overview — rather than a screenshot or a scanned printout: the tool targets the fixed bottom-right badge position, not arbitrary marks. If the badge is there and still not removed, send us the original file — it usually means NotebookLM moved the mark, and we will adjust.

Still stuck?

The FAQ page answers the general questions about limits, pricing and formats, and the About page explains exactly how the removal works under the hood.