seems that automount script (/system/etc/install-recovery.sh) does not work on some phones.
Therefore I've changed the application and uploaded new release.
In new release Link2SD does not mount ext2 partition at startup, instead, it only creates automount script and asks for a restart.
After restart if ext2 is mounted you can create link for applications, otherwise not.
You can install the new version (1.0.4) from first post.