diff --git a/backend/src/services/auth/auth-signup-service.ts b/backend/src/services/auth/auth-signup-service.ts
index 0007f24475..b102ed4eb5 100644
--- a/backend/src/services/auth/auth-signup-service.ts
+++ b/backend/src/services/auth/auth-signup-service.ts
@@ -185,14 +185,14 @@ export const authSignupServiceFactory = ({
         },
         { tx }
       );
-      const duplicateUserIds = duplicateUsers
+      const nonAcceptedDuplicateUserIds = duplicateUsers
         .filter((duplicateUser) => duplicateUser.id !== user.id)
         .map((duplicateUser) => duplicateUser.id);
-      if (duplicateUserIds.length > 0) {
+      if (nonAcceptedDuplicateUserIds.length > 0) {
         await userDAL.delete(
           {
             $in: {
-              id: duplicateUserIds
+              id: nonAcceptedDuplicateUserIds
             }
           },
           tx
@@ -370,14 +370,14 @@ export const authSignupServiceFactory = ({
         },
         { tx }
       );
-      const duplicateUserIds = duplicateUsers
+      const nonAcceptedDuplicateUserIds = duplicateUsers
         .filter((duplicateUser) => duplicateUser.id !== user.id)
         .map((duplicateUser) => duplicateUser.id);
-      if (duplicateUserIds.length > 0) {
+      if (nonAcceptedDuplicateUserIds.length > 0) {
         await userDAL.delete(
           {
             $in: {
-              id: duplicateUserIds
+              id: nonAcceptedDuplicateUserIds
             }
           },
           tx
diff --git a/backend/src/services/user/user-dal.ts b/backend/src/services/user/user-dal.ts
index eecc256299..88cd1a7347 100644
--- a/backend/src/services/user/user-dal.ts
+++ b/backend/src/services/user/user-dal.ts
@@ -198,7 +198,11 @@ export const userDALFactory = (db: TDbClient) => {
     try {
       const doc = await db(TableName.Users)
         .where({ email })
-        .leftJoin(TableName.Membership, `${TableName.Membership}.actorUserId`, `${TableName.Users}.id`)
+        .leftJoin(TableName.Membership, (qb) => {
+          void qb
+            .on(`${TableName.Membership}.actorUserId`, `${TableName.Users}.id`)
+            .andOn(`${TableName.Membership}.scope`, db.raw("?", [AccessScope.Organization]));
+        })
         .leftJoin(TableName.Organization, `${TableName.Organization}.id`, `${TableName.Membership}.scopeOrgId`)
         .select(selectAllTableCols(TableName.Users))
         .select(