Overriding template not working

Hi
I try to override template according to https://www.wpdownloadmanager.com/doc/template-files/.
I copied file link-template-default.php
from plugins\download-manager\tpls\link-templates\
to \themes\my-theme\download-manager\link-templates\
and made channges but plugin still read file from plugins\download-manager\tpls\link-templates\