Something not working, or a question? Email [email protected] — you'll get a human answer.
Your marks live on your device. If you clear browser data (or iOS Safari cleans up an unused site), history can be lost — the backup feature (Stats screen) saves your data as a file you control. Premium restores separately with your license key.
Purchases are processed by Polar under their refund policy — or just email us and we'll sort it out.