Email
What to write about
- Starter Pack orders — use the subject “NOTE-KU Starter Pack”. We reply with payment details (USDT, BTC or ETH) and send the PDF once payment arrives.
- Problems with a purchase — if a file won’t open or download, tell us within 30 days and we’ll fix it or send a replacement.
- Bugs and app feedback — tell us your device, browser and what happened. A screenshot helps a lot.
- Schools and educators — interested in using the method with a class? We’d love to hear from you.
- Press and partnerships.
Before you write
Many questions are answered in the FAQ and the app guide. For how your data is handled, see the privacy policy.