To install the extension,

1. Upload and Extract the Sunsky package and Integrator file inside the <magento-root>/app/code/Ced/ directory and run the below command from magento root.
   php -dmemory_limit=5G bin/magento setup:upgrade
   php -dmemory_limit=5G bin/magento setup:di:compile
   php -dmemory_limit=5G bin/magento setup:static-content:deploy -f
   php -dmemory_limit=5G bin/magento index:reindex
   php -dmemory_limit=5G bin/magento cache:clean
   php -dmemory_limit=5G bin/magento cache:flush