You will get a useful answer much faster if your first email already has:
Please do not send passwords, card numbers or documents in an email. We will never ask you for them.
In apps that offer accounts, open Settings → Account → Delete account. The account is disabled immediately and everything associated with it is erased within 30 days. If you cannot reach that screen, write to hello@dayantech.com.br from the address on the account and we will do it for you.
Ask at hello@dayantech.com.br. We send a machine-readable export within 15 days, the deadline the Brazilian LGPD sets. There is no charge.
Subscriptions bought inside an iOS app are managed by Apple: open Settings → your name → Subscriptions on your device. On Android, open the Google Play Store, then Payments & subscriptions → Subscriptions. Cancelling stops the next renewal and you keep access until the end of the period you already paid for.
Purchases made through the App Store or Google Play are refunded by Apple or Google, not by us — use reportaproblem.apple.com or the Google Play order history. If you bought directly from us, write to hello@dayantech.com.br and we will handle it.
We confirm receipt within two business days, tell you whether we can reproduce it, and let you know which release will carry the fix. Crashes and data-loss bugs jump the queue.
Please report it privately to hello@dayantech.com.br with the subject line "Security", including the steps to reproduce it. We acknowledge within two business days and will keep you updated until it is resolved. Please give us a reasonable window to fix the issue before disclosing it publicly.
We answer in English, Portuguese and Spanish.
Still stuck? Write to hello@dayantech.com.br and describe the problem in your own words. A real person reads every message.