So i am having the same problem. I can get emails in mt "Email" app but when i go to the "Gmail" app i get nothing. I can send email from my "Gmail" app just fine and it is instant getting to another email, however no emails come to the "Gmail" app even after i refresh.
The only thing that works is if i go in and change the "sync" on the lables, in the "Gmail" app. After that i get all the email ONE TIME. after that, nothing. I can go in and change the "sync" again (like from 1 day to 2 days. back and forth, again and again). So whenever the "sync" is change i get email one time.
Any ideas?? I unistalled ATK b/c people said that was causing it, but no luck. I closed Sportstap b/c people said that was causing it and again no luck. All my settings are as they should be but still no mail in the "Gmail" app.
If anyone has any other ideas let me know.