Contact support
Support and privacy email: 3540259857@qq.com. To help us respond quickly, include the app version, OS version, when the problem happened and which step failed; screenshots without sensitive information are welcome.
Never send a full login code, password, sign-in token, private key or complete VPN configuration. We will never ask you for them.
Signing out vs. deleting your account
Sign out: disconnects the VPN and ends sign-in on this device. Your account and entitlements remain.
Clear saved credentials: removes the login code or sign-in details stored on this device. Your account on our servers is not affected.
Delete account: permanently deletes your account. This cannot be undone.
Delete your account on iPhone
Open Xiaoniu VPN, go to Account, choose Delete account under Terms and privacy, read the explanation and confirm.
You are signed out on all devices immediately, and the account's sessions, devices, login codes, entitlements and VPN credentials are revoked. Your email address, password hash, device records and diagnostic data are then permanently deleted, usually within a few minutes.
App Store transaction records are kept without any link to you so Restore Purchases and refunds still work; user identifiers and email are erased from security audit records; the deletion receipt is kept for 30 days.
Android, Windows, or if you cannot sign in
Email 3540259857@qq.com from the address on your account, or include the last 4 characters of your login code and roughly when you last used it, and ask for deletion. After verifying the request we delete the account in the same way and reply by email.
Account deletion and subscriptions
Deleting your account does not cancel an App Store subscription. Cancel it in Settings > Apple Account > Subscriptions on your iPhone to avoid further charges. Ask Apple for refunds.
Subscriptions belong to your Apple Account. On a new device or after signing in again, use Restore Purchases in the app to link an active subscription to the current account; one subscription can be linked to only one account at a time.
Connection troubleshooting
Check that your network works, your account has not expired and the system VPN permission is allowed, then refresh the route list and try another route. Note whether the failure happens at sign-in, loading routes, starting the connection or after connecting, and include that when you contact support.