I was referring to device compatibility, which is a checkbox selected by you upon upload...
I understand your confusion, you are not the first to do this, and will be far from the last... But please scroll up and perceive with your own eyeballs: Next to file title BM-230-all.zip, there is an icon for both Windows and Linux. This is because YOU selected the checkbox flagging their compatibility in the Itch system UPON UPLOAD. Next to file title BM-240-all.zip, THERE IS NO ICON, BECAUSE YOU DID NOT SELECT THE CHECKBOX UPON UPLOAD. I have gone through this with several other creators on Itch. Re-upload the damn file and DON'T FORGET TO CLICK THE OPTIONS IN THE UPLOADING PROCESS. Thank you...