This page explains the different View Modes of the HTML5 Viewer and how to use them.
The 3D View Mode displays the 3D pointcloud.
The Spherical View Mode displays the spheres/panorama images. This is the default view mode at opening a publication, if panoramic imagery exists.
The Planar View Mode displays the planar images.
The Oblique View Mode displays the oblique images.
Click on the '+' on the left sidebar and choose the view mode that should be visualized on the pop-up.
Hover over the eye-icon on top of the view mode. Choose the desired View Mode.