RAM Structural System version 16.00 uses CONNECT licensing and this is different than prior version with SELECT Licensing. We have written a Guide to help in understanding CONNECT Licensing. You must be signed into Communities to download it.
There are a few basic steps to activate the product and these steps can help in understanding any problems that might occur:
For a further explanation of the activation process see: How to Activate products under CONNECT Licensing
For more advanced troubleshooting, it's useful to Collect and send License client logs.
CONNECT Licensing Wiki
How products are licensed under CONNECT Licensing