CreativeCloud v5.5.0.617 (windows server 2019) unable to launch premiere/AME due to license issue

Hello, 
we are using Windows Server 2019 (datacenter) for our needs. The last supported creative cloud version on that OS is v5.5.0.617. 

Despite being included in my plan, when I launch Premiere / Media Encoder from the creative cloud, it fails with the error "Sorry this product doesn't seem to be licensed". 

If I use the same account on a different OS (Mac/Windows) with Creative Cloud version v.6.1.0.587, both Media Encoder and Premiere work fine. 

This account used to work on Windows Server 2019 (with v5.5 creative cloud) up until 01/16. 

We are looking for immediate assistance and guidance to ensure we can launch Premiere and Media Encoder from creative cloud (v5.5.0.617) as we have a valid license. 

Kindly advice. 

Aditya Ippili.