In the legal part of the Codebusters contest, and the future Hypersonic contest, contest rules, the article 4 “Practical programming test” seems to be related to old contests that were coding puzzles, not “multiplayer” games.
However, on the last question, once the “Submit” button has been clicked, the total work is considered validated and Participants cannot go back to modify their programs anymore. If Participants have not submitted their solutions on the platform within the overall time limit, their work will be submitted automatically as is.
It seems to be outdated.