OS X (iMac/Macbook) Certificate Manual Install
Download a self installing file HERE
(open by Control + Open)
Download the manual certificate HERE
Navigate, in Finder, to Applications > Utilities > Keychain Access.
Double-click to open Keychain Access.
Select the “System” keychain.
To install the Securly SSL certificate
Open File>Import Items
Navigate to the location that you saved the Securly SSL certificate file to (you can download the file below)
Import the "securly_SHA-256.crt" file into the “System” keychain
Verify the SSL certificates: Issued To "*.securly.com" is installed.
Double click on the certificate, you will see "Trust"
Click on the right triangle so that it drops down the trust area
Please verify it says "Always Trust" for all items