Start from our download page for the correct build, then follow the sections below. See also guides and FAQ.
Before you change settings
Note your app version (About screen) and whether you are on Wi‑Fi or mobile data. Many fixes differ by network type.
After changing protocol or routing mode, disconnect and reconnect—dropdown changes alone often do not apply.
Step-by-step checks
Try three servers in different regions before assuming the app is broken.
If only one app fails, check split tunneling rules or whether that app blocks VPN traffic.
When to stop troubleshooting
If mobile hotspot works but office Wi‑Fi does not, the issue is local network policy—not the installer.
Account expired, device limit, or expired iOS profiles require account or profile fixes, not reinstall loops.
Before you change advanced settings
Note the app version on the About screen and confirm your Kuaimiao VPN plan is active with free device slots.
Identify whether you are on home Wi‑Fi, corporate Wi‑Fi, or mobile data—blocks differ sharply by network type.
After a major OS upgrade, VPN extensions or profiles may be disabled until you approve them again in system settings.
Fast troubleshooting order
Try three servers in different regions (wait ~30s each), switch Auto to TCP, then test Global mode for 30 seconds.
If Global works but split routing fails, fix rules/DNS—not your password. See guides for routing notes.
Tether mobile data: if cellular works but office Wi‑Fi fails, focus on local network policy.
Use the download page and FAQ together
Package architecture and build numbers live on the download page—avoid random cloud repacks.
Billing, device limits, and common errors are summarized in FAQ; include version + server name in support tickets.
Streaming/gaming/corporate scenarios are indexed under guides—do not treat every issue as “cannot connect.”
Safety boundaries
Never type Kuaimiao VPN credentials into third-party web forms; unknown “config portals” can steal subscriptions.
Follow local laws; disconnect for banking apps that block proxies if required.
Shared accounts trigger anti-abuse locks that look like broken accounts—use your own plan.
When to stop troubleshooting
Stop when mobile hotspot works (local Wi‑Fi issue), TCP + new servers fix it, or renewing/unbinding devices resolves account errors.
Reinstall loops won't fix expired iOS profiles, MDM bans, or unpaid plans—classify the failure first.
If UI differs from this article, trust your installed build and compare with the download page.