Default How to Restore SMS on my LG G2?

hi there.
Just got my brand new LG G2....and I'm still amazed with it.
Right now I'm facing a problem concerning restoring my SMS.
I always used SMS BACKUP.
I do know, from a previous phone I had, that this has to do with Kitkat security.
On that previous phone I had to give some authorization for SMS BACKUP write on my SMS log, so that backed up messages could be stored.
With my LG G2, since the entire operating system is different from a clean stock rom, I can't seem to find the option to give proper authorization.
Can anyone help me with this?