You just have to do the following:
- Extract the contents of the AP patch's .zip file (Windows 10 can do this natively; if not, download and install either WinRAR or 7-Zip)
- Run Lunar IPS
- Apply IPS Patch
- Select OSSAFix.ips file
- Select Rockman.EXE: Operate Shooting Star rom (Click the drop down menu that says 'Most Common ROM Files' and change it to 'All Files' to be able to view/select .nds files)
- AP Patch has been successfully applied.
This is exactly what I did but when I tried it again, the anti-piracy code was still there . Is it ok if i ask for your patched copy of the rom instead?