| Title | Started by | Date created | Latest post | Posts |
| Is dataset still available? | komakiZhao | Jun 28, 2021 | 2 years, 8 months | 2 |
| test data not available | xiongyineng | Jun 08, 2021 | 2 years, 10 months | 1 |
| About challenge participating time | xiongyineng | May 27, 2021 | 2 years, 10 months | 1 |
| Submit status always shows submitting and no score | xiongyineng | May 12, 2021 | 2 years, 11 months | 2 |
| Is this challenge still open yet? | xiongyineng | May 10, 2021 | 2 years, 10 months | 3 |
| Track information | tuvovan | Feb 09, 2021 | 3 years, 2 months | 2 |