So for the past 4 days or so my gmail isn't syncing on my android device between the relative hours of 11-5. It's weird. No autosync or even if I try to sync manually. Then randomly it will work like normal. During the day I'm on my data network and at night on wifi. But even if I'm on data network after 5 it still works. So network doesn't matter.
It's beyond me. I've relieved plenty of space, removed apps, turned phone on and off etc.