Home page is not showing logo

Hi congtien
I have checked on your site and found that you have changed it. You should turn off the Enable Metabox option at the dashboard>>Pages>>Edit your home front page>>Theme Option before. After that you choose Ovic Panel>>Theme Option>>General>>Logo and change your logo there.
If you have other questions then connect to me please. I will check and help you asap.
Have a nice weekend.
Maason