For me the page is displayed correctly. Maybe there was a problem on the page when you were trying it or some incompatibility with your browser.

For the submission of runs you must access the page of each world.
For example: https://www.speedrun.com/duty_of_galaxy_lite_sokoban_ai_robot_push_box/level/World_1

By changing the last value in the link, you also have access to other world pages if you cannot access the page directly for some reason.

Happy Glass

Brawl Stars

Duty of Galaxy Lite: Sokoban AI Robot Push Box

about running ability

Anyone alive??

Need help with "Level leaderboard"

Act_

Gaming_64

Zanum

grnts

Choco_Impact

101-in-1 Games 2: Evolution 

234PlayerGames

Sokoban For Beginners

Monkey - Logic Puzzles

Gemmy The Thief

Sokoban: The Journey