If your Mac OS can't install EasyEDA client, please refer at: [How to open apps from unidentified developers on macOS Sierra](https://www.imore.com/how-open-apps-unidentified-developers-mac)
If it doesn't solve your problem, you can try: [How to create the desktop client for yourself](https://easyeda.com/forum/topic/Tip-and-Skill-How-to-create-the-desktop-client-for-yourself-c3906607c76848c381ef0afd37282a17)