My workspace is showing Free plan and 200 chats limit

You most likely forgot to set up an ADMIN_EMAIL variable or did not signed up using the specified email. You can also set the DEFAULT_WORKSPACE_PLAN variable to the value of your choice (FREE, STARTER, PRO, LIFETIME, UNLIMITED) to attribute the specified plan to all newly created workspaces. You can also directly connect to your database and update the Workspace table to change the plan of an existing workspace.

I can’t upload files

You need to add an S3 configuration to your project. If you are self-hosting with Docker, you can add a S3 service to your docker-compose file.