thank you for pointing it out. unfortunately it seems to be a problem with the engine I used - Gamemaker. Ohter gamemaker games like undertale have the same problem.

they have found a very complicated work around for this https://psteamcommunity.yuanyoumao.com/app/609490/discussions/0/1697169163417924570/
the number you would have to use is 1036850

but for now, i would rather recommend to take a screenshot with windows/linux and upload them as artworks.

yours, kindman

ok, thanks for reply. i'l try to follow the workaround.

however, it would be handy, if possible, of course, if there's an in-game hotkey for screenshots.