You can download the Page Vault Launcher (or RDP file for Mac) at our tech resources page: resources.page-vault.com.
We recommend putting a shortcut to the Launcher on your desktop for easy access.
Note that we do not have a Launcher for Mac; instead you connect directly to Capture Mode via an RDP file. You will also need to have Microsoft Remote Desktop client installed before you can open the RDP file. Instructions are on the resources page linked above.