To install the extension

1. Upload and Extract the Ebay package and Integrator file inside the <magento-root>/app/code/Ced/ directory.
2. Update composer.json File By Adding The code Written Below Under Autoload PSR-4 Section-
        “EbayFileExchange\\”:”app/code/Ced/EbayMultiAccount/ebaymultiaccount/LargeMerchantServicesPHPSamples/application/”
3. After successfully uploading the contents into the directory and performing the above steps, run the following upgrade command in cmd

              composer dump
            php -d memory_limit=5G bin/magento setup:upgrade
            php -d memory_limit=5G bin/magento setup:di:compile
           php -d memory_limit=5G bin/magento setup:static-content:deploy -f
           php -d memory_limit=5G bin/magento index:reindex 
           php -d memory_limit=5G bin/magento cache:flush