TestProject Terms and condition

I know testproject is a free tool for test community and have promised to remain so but when I see your terms and condition while installing an agent I see this.

Can someone explain me if this is a free tool then why there is this payment, refund clause in T&C ?? For what purpose this has been added here? are we going to be a subscription based tool in future ?

Please reply as I am planning to create an account for my organization and it will be a deciding factor