These apps are not on the China App Store, so a China Apple ID won't find them. Two options:

1. Recommended: create a non-China Apple ID (US or HK region — free, choose "None" for payment), sign into the App Store with it, then search and buy. You can switch back to your own account afterwards; the app keeps working.
2. Don't want the hassle? Install the free Karing or V2Box — plenty for most users.

The file isn't broken — macOS Gatekeeper is blocking an unsigned app. In Terminal run:

xattr -cr /Applications/Clash\ Verge.app

(replace with your actual app name), then reopen it.

These clients modify the system proxy, so they're often false-flagged. Every file here is the original, unmodified release. Where a project publishes a SHA256, it's shown next to the file — match it and you've confirmed the file is clean. Add an exception and install.

Some projects (e.g. Clash Party) publish a SHA256, which this page fetches and shows beside the file. To check:

Windows (PowerShell):  Get-FileHash .\file.exe -Algorithm SHA256
macOS / Linux:         shasum -a 256 filename

If it matches what's shown here, the file is exactly what the project published.

The bottom of this page lists backup domains — try them in order and use whichever opens. Bookmark this page now and note the backup domains.

1. Confirm the subscription imported (you can see a node list, not empty).
2. Try a different node — don't just use the first one.
3. Make sure the system proxy is on (usually "System Proxy" or "TUN mode" in the client).
4. Still nothing? Update the client to the latest version, then contact support.