If you'd like to upload a new file for your Terms of Service, you'll need to upload a new file. You can't change an existing one. However, you can rename an existing Terms of Service file:

1) Click on Settings in the Account dropdown menu.

2) Click on Manage Terms of Service.

3) Click on the Terms of Service you want to rename.

4) Click Edit.

5) Make your edits.

6) Click Save.