・Need full diff sets

The lowest difficulty for new players is missing.

・Wrong meta

The infomation of the chart is wrong. Please check title, artist, cover or chart version name.

・Wrong chart format

Chart file cannot be downloaded. The chart is not a valid format for melody, please review the stable rules.

・Music too short

The song is too short. We do not accept a song under 60 sec.

・Check stable rules

There are severe issues of your chart didn’t match the stable rule.

・Too difficult

The difficulty of your chart exceeds a proper range.

・Wrong BPM or offset

The BPM/offset of this chart is wrong. Please calibrate that again.

・Quality problem

The chart has bad note arrangement.

・Copy cat


Too similar with other charts.

・Audio quality

The audio quality is too low or too high.