did you create the subdomain in the control panel? are you sure that you ulpaded files to the htdocs folder in your directory of the domain? additionally:
Getting a 403 error means the server is refusing to show your webpage. Here are the most common causes and how to fix them:
InfinityFree client area
Go to Accounts → [Select your account] → Domains → [Find your domain] → Manage
Find the Directory Status card, and look at the Directory displayed there
Understanding the folder structure:
Your fi…