Login link points to wp-login.php

 We are testing this plugin on a multi-site install. The login link on the comment points to wp-login.php while other login links for logging in point to /my-account/ instead. The problem with this is the wp-login.php link takes the user to the network domain in a multi-site install instead of the login page for the child site.

Example…

User clicks login link in other areas, they get this page:
http://site-name.com/my-account/  (preferred destination)

User clicks login link in this plugin they are taken here:
http://site-name.com/wp-admin.php  – which immediately redirects to here:
http://network-domain.com/site-name/wp-login.php  (not good)

Not sure if this is because registration is disabled for the network at the moment. Is that what would cause this? Or is this plugin not multi-site compatible?