Hi
neshdneshdYour model is ZC520TL. Please provide me the information below:
1. Screenshot of Apps Info
Setting>Apps & notifications>App info>(All apps)
2. Long press the middle of the Wallpaper, you will reach to "Manage Home", press "Wallpapers". If you can enter "Wallpapers", the "Force stop" ZenUI Launcher is recalled. If it doesn't work, please provide me the screenshot of your "Manage Home"
3. If you still couldl not find back your ZenUI Launcher. You can try
a) Manual update to the latest version(WW-15.10.1810.275)
#ZC520TL Download Spot
https://www.asus.com/Phone/ZenFone-3-Max-ZC520TL/HelpDesk_BIOS/#Manual Update guide
https://www.asus.com/support/faq/1009748b) "the Factory Reset"
Setting>System>Backup & reset>Factory data reset.
Please make sure to back up your data before updating or re-setting.