The is a security and licensing credential required specifically for the EasyEDA Desktop Client. It is used to authenticate a legitimate user account and enable offline mode or other desktop-specific features without requiring a constant internet connection. Activation File Download Link Official Download Page: EasyEDA Activation File.
: If you need to switch the active user, you must delete the existing activation file from the installation path and repeat the process with the new account's file. Desktop Client FAQ - EasyEDA Pro User Guide easyeda activation file link
The confusion over "activation files" comes from the two versions of EasyEDA: EasyEDA activation file The is a security and