diff --git a/packages/hydrooj/src/model/contest.ts b/packages/hydrooj/src/model/contest.ts
index a5eb6774f..ec9bfbfd6 100644
--- a/packages/hydrooj/src/model/contest.ts
+++ b/packages/hydrooj/src/model/contest.ts
@@ -417,7 +417,7 @@ const ledo = buildContestRule({
                 value: tsddict[pid]?.penaltyScore || '',
                 hover: tsddict[pid]?.ntry ? `-${tsddict[pid].ntry} (${Math.round(Math.max(0.7, 0.95 ** tsddict[pid].ntry) * 100)}%)` : '',
                 raw: tsddict[pid]?.rid,
-                style: tsddict[pid]?.status === STATUS.STATUS_ACCEPTED && tsddict[pid]?.rid.generationTime === meta?.first?.[pid]
+                style: tsddict[pid]?.status === STATUS.STATUS_ACCEPTED && tsddict[pid]?.rid.getTimestamp().getTime() === meta?.first?.[pid]
                     ? 'background-color: rgb(217, 240, 199);'
                     : undefined,
             });
@@ -438,13 +438,13 @@ const homework = buildContestRule({
             if (tdoc.pids.includes(j.pid)) effective[j.pid] = j;
         }
         function time(jdoc) {
-            const real = jdoc.rid.generationTime - tdoc.beginAt.getTime() / 1000;
+            const real = (jdoc.rid.getTimestamp().getTime() - tdoc.beginAt.getTime()) / 1000;
             return Math.floor(real);
         }
 
         function penaltyScore(jdoc) {
             const exceedSeconds = Math.floor(
-                jdoc.rid.generationTime - tdoc.penaltySince.getTime() / 1000,
+                (jdoc.rid.getTimestamp().getTime() - tdoc.penaltySince.getTime()) / 1000,
             );
             if (exceedSeconds < 0) return jdoc.score;
             let coefficient = 1;
diff --git a/packages/hydrooj/src/model/setting.ts b/packages/hydrooj/src/model/setting.ts
index 4d51f8c28..4e9f5e986 100644
--- a/packages/hydrooj/src/model/setting.ts
+++ b/packages/hydrooj/src/model/setting.ts
@@ -285,7 +285,6 @@ SystemSetting(
     Setting('setting_session', 'session.unsaved_expire_seconds', 3600 * 3,
         'number', 'session.unsaved_expire_seconds', 'Unsaved session expire seconds'),
     Setting('setting_storage', 'db.ver', 0, 'number', 'db.ver', 'Database version', FLAG_DISABLED | FLAG_HIDDEN),
-    Setting('setting_storage', 'system.webmanage', 'disabled', 'text', 'system.webmanage', 'Enable web manage', FLAG_DISABLED | FLAG_HIDDEN),
     Setting('setting_storage', 'installid', String.random(64), 'text', 'installid', 'Installation ID', FLAG_HIDDEN | FLAG_DISABLED),
 );