First, you will need to make sure that you have a license assigned to your account. Please refer to this article for a guide on how to do this:
How do I assign users to my license?
Afterwards, download the Key Product from the my.transoftsolutions.com portal.
Once downloaded, double-click and run through the installation for the product.
At the end of the installation the following screen will be displayed.
Select Cloud hosted (USL/TSL).
Then select the 'Setup Licence' button and wait until the following screen appears
After this, when you run the Key Product for the first time, you will be requested to input the same email address and password used to log into the the portal.
Once these credentials have been inputted, your software should now be using the cloud licensing.