After installing the plugging I am getting above message
Contact with your purchase item author hope they will help you out from your issue.
From your screenshots I can see the plugin has installed and activated successfully. But there is a warning which mean your hosting Server timed out and closed the connection, I think you can ignore the warning and all will be fine and will work for you.
If you very much interest to fix this issue then please contcat hosting support and tell them to increase
in this case you have to contact your purchased theme author. Asuming this one your purchased item and it is your author support page:
Also you can post a comments going through theme commnets page.