I use Google Calendar on my M2 (Android version 5.1) (Flyme build 5.1.11.OG) and sync with my laptop Google calendar. Recently when I enter an event on my M2 it will not accept the event. I type it into my phone but it disappears almost immediately and does not synch with laptop. If I enter on laptop it is OK and appears on my M2. Have tried Google Forums with no success. Please help me sort this out. I do not understand all the terminology. I just want to be able to use my phone and Google Calendar properly. Help me please.