Node trial license failed to activate

We registered for Lumerical FDTD Solutions License (trial license valid for 30 days). However, when we entered the activation code provided in the email below, we get an error message (screenprint of the error message attached). Please let us know how we can fix this issue.

According to your Issue, you are using a trial license that is a Node Locked license. This license type does not need the FlexNet license manager, instead it is activated by the Product License Configuration Utility.

Please find the link below for step by step process to activate your license:
Please expand " Activating your Licence online". Here, you will find detailed information on Activating your Node Lock License.

The link below provides more information on Evaluation Licenses: