Free Trial activation issues

Hi, I saw these posts and have a response.  I had an issue (the same one!), or, I could not select "free trial". 

It was gray. 

I have a Azure free trial.  I have created a subscription.  I have created a resource group.  I have linked my subscription according to the following steps.  In other words if you do not have basic training in Azure you need to try to learn them.  Resources are created within a Subscription.  Numerous sources exist.  They explain intro to azure.  I use Azure to just build a database, so I need to create a database after I create a resource group and that is after I create a subscription.  However, to use Fabric free trial I think I needed to add the Fabric service to a subscription and resource group.  I will be charged for something eventually so don't really think it is truly free.

Here are useful urls.   

External ID pricing - Microsoft Entra External ID | Microsoft Learn