I have an LG G5 H830 locked to T-Mobile. The LG calendar app is not syncing to my Google calendar. As I type this on March 18, 2019, the app is showing "last synced on 3/14/19". I pressed sync now, and nothing happened. Setting selected to sync each time the app is started. I just installed the Google Calendar from the Play Store, and that caused the calendars to sync; the updated calendar is now showing in LG Calendar as well. However, Contacts are still showing last synced on 3/14/19. The Contacts line has a up arrow and down arrow in a circle, which appears to mean "click me to sync". But when I press that, it just turns sync off.
Is this just an unreliable app? I don't really like the way Google Calendar works. Maybe I'll try clearing data for the LG app and see if that fixes the problem. Thanks.