the only thing i can imagine you'd be doing wrong is clicking download and then closing the tab immediately. you have to wait for it to finish
there's also a download limit for mega, if you download too much it'll just stop the download until a timer resets
Well I mean I need to know exactly what to do when it comes to external crap it's so confusing when I can't directly download it.
you literally click download and then leave the tab open until its done, what about that is so confusing?
You can't use the itch app. You have to copy the URL from the itch app and open it in a regular browser.