diff --git a/src/services/group-sync.ts b/src/services/group-sync.ts
index 1ce6b54..4342349 100644
--- a/src/services/group-sync.ts
+++ b/src/services/group-sync.ts
@@ -439,7 +439,11 @@ export class GroupSyncService {
 							}
 						}
 
-						const norm = normalizeWhatsAppId(jid);
+						let norm = normalizeWhatsAppId(jid);
+						if (!norm) {
+							const digits = (jid || '').replace(/\D+/g, '');
+							norm = digits || null;
+						}
 						if (!norm) continue;
 						result.push({ userId: norm, isAdmin });
 					}
@@ -528,7 +532,11 @@ export class GroupSyncService {
 				}
 			}
 
-			const norm = normalizeWhatsAppId(jid);
+			let norm = normalizeWhatsAppId(jid);
+			if (!norm) {
+				const digits = (jid || '').replace(/\D+/g, '');
+				norm = digits || null;
+			}
 			if (!norm) continue;
 			result.push({ userId: norm, isAdmin });
 		}