Hi
The cause maybe by your host, it's limited some values. Here are some requirements for the KuteShop theme:
Before you begin the install, checking to ensure that you have the minimum requirements for the KuteShop is WordPress 4.4.0 or highter, PHP 5.4 or highter and MySQL 5.4 or highter.
Recommended PHP Configuration Limits:
Many issues that you may run into such as; white screen, demo content fails when importing, empty page content with Fusion Builder and other similar issues are all related to low PHP configuration limits. The solution is to increase the PHP limits. You can do this on your own, or contact your web host and ask them to increase those limits to a minimum as follows:
max_execution_time 360
memory_limit 256M or more
post_max_size 64M
upload_max_filesize 64M
Please check these info and try again. If it does not work, please provide your Cpanel accounts details via secret information area. I would like to check directly on your host and reinstall it.
Regards