Web activity not working on new Android install

I'm a new (potential) user who just created an account and set up NF on a phone. I decided to test it out on my phone first before possibly installing it for the family. The phone is an LG L16C, Android 4.4.2,  and I set up the phone as a "child" device.

I can see the phone in the web portal, and if I make changes to House Rules, they get pushed out to the phone. However, the web activity is only showing about 10% of the sites that I visited over the past two hours. There seems to be no pattern to which sites get logged and which do not, though it seems slightly better in the Chrome browser than in the stock browser. Also, for logged sites, the time is showing up as UTC, not my local time.

I've read the forums and tried the suggested solutions. Since my main interest in NF is for tracking web activity, this isn't looking so good right now....anything that you suggest?

Thanks,

Cory