That information is somewhat outdated. It takes longer than 24h even if the game isn't paid. But you're right, three weeks is a bit much. Just keep in mind that it's the weekend, so any reply will be delayed.
The game became indexed today: https://itch.io/search?q=pushle
Hooray...
Patience seems required for new developers, and we did not get any reply to our message to support yet. (So we do not know if there were any special reasons for why this process took several weeks.