To install the extension

• Log in the ftp, and then go to Magento 2 root folder (generally present under the public_html folder).
• Create a new folder named code under the app folder; under code folder, create a folder named Ced.
  1. Upload or Drag and Drop app/code/Ced directory.
  2. After successfully uploading the directory, the extension will be installed/upgraded.
  3. Now run the  following upgrade command in cmd 
     php bin/magento setup:upgrade
     php bin/magento setup:di:compile
     php bin/magento setup:static-content:deploy -f
     php bin/magento index:reindex
     php bin/magento cache:flush