rekordbox for iOS/Android becomes unstable. Why?

Update rekordbox to the latest version.
Turn off the mobile device, then turn it on again.
Quit any other applications on your mobile device.
If rekordbox remains unstable, try disabling the wireless network or other wireless connections, antivirus application, low-power mode, etc. (When quitting antivirus security software, before doing so, disable the internet connection to ensure the security of your PC/Mac.)