The documentation of Toolbar says
If an app uses a logo image it should strongly consider omitting a title and subtitle.
Try this...
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_landing_page);
.....
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_landing_page);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
.....
}