Your tablet and computer has preview of your scans under project list , you can view them all .
Just click on the project and select VIEW, you can see the model in real time .
And to see a preview in Revo Studio before opening we need to ask Microsoft for that preview .
It is impossible to see a preview of ply files in a browser before opening as it is not part of the software , it is your operating system.
Sadly it is impossible with Revo Studio since it do not host any projects, it is editing software and as all 3D editing softwares there is never preview of any ply mesh before you open it since the operation system don’t support it .