Hi.,
Thank you for contacting us.
Kindly send us your issues with clear screenshot or video to get a clear view to help you better.
You can just download the demo contents files of other demos (kindergarden) from the documentation and extract the zip file in the path wp-content/themes/kalvi/demo-content/ as we have explained in the documentation http://prntscr.com/kqdu6n and then follow the same unyson method to install the demos. Other than our server requirements mentioned in the document, no other special steps needed.
If the demo that you have downloaded is Kinder Garden. Then you need to upload the extracted file in the path, so that it looks like wp-content/themes/kalvi/demo-content/kindergarden/ Inside the kindergarden folder, the files should be like this screenshot http://prntscr.com/kpdu25
From the following you can download the demo content for all demos.
https://themessupport.com/documentation/doc/kalvi/
https://themessupport.com/documentation/doc/kalvi/?#dt_import_un
Refer: http://prntscr.com/m3aw98
Kindly watch the following video to get a clear view about to install the demo content for other kalvi demos like- kalvi-academy, kindergarden and so on.
If you found any difficulties, Kindly, mail us your site credentials immediately via the right bottom form located @ http://themeforest.net/user/designthemes So that, we can check and import the dummy data (kindergarden ) for you.
cPanel login details (Admin username and Admin password)
WordPress admin login (Domain Name, Admin username and Admin password)
FTP access login details ( FTP Host, FTP Username, FTP Password)