Problem with the installation process

Hello, 
I just bought and downloaded the Joomla extension OS Property. When I tried the installation process, I kept having the same problem (see image captured below). 
The following messages appear :
Warning : JInstaller :: Install: Can't find XML setup file.
Error: Unable to detect manifest file

Can anybody help me, please? 

Hi,
1. Please read this documentation: osproperty.ext4joomla.com/documentation/...started/installation to see how to install OS Property.
2. In case you can't install component, please submit ticket on category: OS Property and provide your site url with super admin account. I will help you to install component for you.
Thanks
Dam

Hello,
I read the documentation on how to install OS Property before doing the actual installation. Nevertheless, I wasn't able to install the component.
I'll buy again the extension for the subscription and I will gladly accept your help for the installation. Is there any possibility that you can help me while I go through the process of the installation without giving you my super admin account, please?

Thanks for your answer.

Sure, we can help you to install and configure OS Property for you. Please submit ticket on category: OS Property and provide your site url with super admin account so we can support you.
Thanks
Dam