Hi Kim,
Thank you for contacting us. You can download the older version of mSecure by following the instructions in this article on our support site: https://support.msecure.com/en/support/solutions/articles/36000064249-download-previous-versions-from-the-app-stores
Kim
How do I get version 3.5.7? This is the version my company uses and I only have access to the old version.