Theme could not be installed

I purchased a theme today with 60 USD. It could not be installed. It is giving error an error message “Package could not be installed. The Theme is missing. The style.css stylesheet” I have not got the bill for the purchase also
Please help
Regards
Prashant Mukherjee`

Please read this:

please go to your Dashboard then statement Tab. you will find invoice(s) there.

You can also check:

Thanks

Hello
This time the theme wa installed. But got another message. Screenshot enclosed
Kindly give me a solution
Regards
Prashant Mukherjee

Please contact the author of the theme and ask him about it.