Why can't I remove my google account from my LG G3?

[AC Question]

Hello, I'm trying to remove my google account from my LG G3 because all apps relates to my google account doesn't work recently.
When I go into settings, select remove account> OK, nothing happens.
What's wrong?
Are there other ways to do it without factory reset or root?

 

[B. Diddy]

Welcome to Android Central! That should work. It might be related to the problems you're having with other Google apps.

Try going to Settings>Apps, select Google Play Services, and Clear Cache/Clear Data. Then reboot the phone, and see if you can remove the Google account now.

 

[JerryYu8883]

I've tried but I still can't remove the account. btw, it says "Sync error“ under my google account.