I've tried vpn, it still doesn't work.
Btw, why should I use vpn? I could straightly visit itch.io or gumroad or patreon without vpn.
Waiting longer is quite annoying. But there is a biggest problem I got. Please see the picture no.4 I posted, I entered the game, I tap the screen on the characters page. It cannot work whatever the characters I tap. Is the bug of the latest version? The characters page contains several error messages.