Free Substance Student license

if you have a license predating adobe's acquisition of substance3d, read FAQ for Substance Accounts EOL - Substance 3D (adobe.com) which includes:

The free student licenses are provisioned via the Substance account so you should review the changes detailed below to make sure you backup your license key files and builds. Your student licenses will keep working normally until they reach their expiration date but you need to backup the license key files and software builds if you want to re-activate your license on a different machine after September 30, 2022.

p.s. there's other info here, Substance becomes Adobe Substance 3D

Hi there, 

The trial is just for 7 days. Once the trial finishes, in order to continue using the app, you will have to purchase the same. 

You may see all the plans here: https://community.adobe.com/t5/account-payment-plan-discussions/creative-cloud-plans/td-p/12846589

Feel free to let us know if you have any other questions. 

Thanks 

Kanika