Pydio smartphone app Sync problem

Hi, I have problem with pydio smartphone app.
The first time i setup backup in pydio app to do backup every 6 hours. After finishing setup it start and backup all data; if later I take some pictures or put other files in my smartphone I will not find them in pydio server because backup is not working automatically.
Can someone help me with this? Thanks and sorry for my “bad” english.