Hi,
Welcome to Microsoft Q&A community forum!
Have you used an Azure subscription in the past? The Azure Terms of Use agreement limits free trial activation only for a user that's new to Azure. If you have had any other type of Azure subscription,
you can't activate a free trial. Consider signing up for a Pay-As-You-Go subscription.
if you receive the message You are not eligible for an Azure subscription
check the following information:
- The information that you provided for your Azure account profile (including contact email address, street address, and telephone number) is correct.
- The credit card information is correct.
- You don't already have a Microsoft account that uses the same information.
If you are still having trouble I would recommend creating a free support ticket with the Billing team.
Hope this helps
Cheers
Luca