H815 CM 13 - Mobile network disappears

Hi. Recently I installed Cyanogenmod 13 on my LG G4 H815 (international, without any broadband) and I like it for some reasons, but I have one issue.
Sometimes my network connection (I prefer using 3G, but the same is with LTE) disappears and I have only GSM without internet connection. There was no such problem with stock ROM.
I flashed cm-13.0-20160721-NIGHTLY-h815.zip. I searched a little and found similar problem with CM13, but on OnePlus One forum.cyanogenmod.org/topic/118316-cm13-mobile-data-connectivity-issues/
Not much I found.
I attach my screen when problem appears: i.imgur.com/zntwdZu.png

Thanks for your help.

Messaging Icon Disappears

Hello, yesterday my wife was changing themes on her P8 with EMUI 4.0, then she notice the messages icon has disappear and we can't find the icon anywhere. She only can view or send sms when she receive one, because we cannot find the application anywhere or even make a shortcut.
There's anyway to solve this? Probably i'll make a backup and make a factory reset.