Oh yea, I remember I use Owncloud 10.0.3 thats give label status Stable, but my problem is not solve. File-sharing app was enabled by default, setting of sharing is good like the suggesstion, but its not work, option button "Share With Link" is dissapear. The goal is like this image on part of Sharing Link (sorry, I am new user just permitted upload 1 image):
But on my server that option is noting, the following is screenshot oc 10.0.3 on my server
Sharing by Public Links
Any suggestion to use OC version 10.0.0, or 10.0.1, or 10.0.2 maybe? Many thanks for help.