Support
How to get help without exposing your license key.
For purchase or license activation help, start with your Gumroad receipt. For app-use questions, include enough detail to reproduce the issue.
Purchase or license help
Reply to your Gumroad purchase receipt or contact humaninstrumentsupport@gmail.com. Keep the receipt available if you need to activate Founding Edition on a new browser or device.
Never post or share your full license key publicly. If you need to describe a key in a support message, refer to it generally rather than pasting the full value.
What to include
- browser and version, such as Chrome, Brave, Safari, or Firefox;
- device type, such as Windows laptop, Android phone, iPhone, or iPad;
- whether you were using Free Demo or Founding Edition;
- what you expected to happen;
- what actually happened;
- any visible error message.
New browser or device
Founding Edition is stored locally in the browser after activation. If you switch browsers, clear site data, or use a new device, open the app and activate again with the license key from your Gumroad receipt.