Cannot delete Application

Cannot delete Application

Hello I am testing Zoho Creator and everything was going fine but, I have copied two applications to "My Apps" and now I want to delete then but I cannot do it. I can disable but I delete then are impossible.
I want to create an application to show to my boss so he buys a subscription. In the free edition I can just create 3 applications.
Any suggestion will be very appreciated.

Best Regards,

Borys