Setting EasyCeiling as the Default Program for Opening .ec Files

Right-click on any EasyCeiling file with the .ec format

In the menu that appears, check the box "Always use this app to open .ec files", then click "More apps"

Scroll down the list and select "Look for another app on this PC"

In the window that opens, navigate to the folder C:\Program Files (x86)\EasyCeiling and select the file EasyCeiling.exe, then click the "Open" button