diff --git a/core/boxes/box_mahnung_offen.php b/core/boxes/box_mahnung_offen.php
index 3e49950..66c1ed7 100644
--- a/core/boxes/box_mahnung_offen.php
+++ b/core/boxes/box_mahnung_offen.php
@@ -9,6 +9,7 @@
  * \file       htdocs/custom/mahnung/core/boxes/box_mahnung_offen.php
  * \ingroup    mahnung
  * \brief      Widget: Aelteste offene Kundenrechnungen mit Mahnstufe.
+ *             Basiert auf box_factures_imp.php, erweitert um Mahnstufe-Spalte.
  */
 
 require_once DOL_DOCUMENT_ROOT.'/core/boxes/modules_boxes.php';
@@ -17,12 +18,12 @@ require_once DOL_DOCUMENT_ROOT.'/societe/class/societe.class.php';
 require_once DOL_DOCUMENT_ROOT.'/custom/mahnung/class/mahnung.class.php';
 
 /**
- * Widget: Offene Kundenrechnungen mit aktueller Mahnstufe.
+ * Widget: Aelteste offene Kundenrechnungen mit Mahnstufe-Badge.
  */
 class box_mahnung_offen extends ModeleBoxes
 {
 	public $boxcode = "mahnungoffenerechnungen";
-	public $boximg = "fa-envelope-open-text";
+	public $boximg = "object_bill";
 	public $boxlabel = "MahnungBoxOffeneRechnungen";
 	public $depends = array("facture", "mahnung");
 
@@ -51,8 +52,10 @@ class box_mahnung_offen extends ModeleBoxes
 		$facturestatic = new Facture($this->db);
 		$societestatic = new Societe($this->db);
 
+		$textHead = $langs->trans("MahnungBoxOffeneRechnungen", $this->max);
 		$this->info_box_head = array(
-			'text' => $langs->trans("MahnungBoxOffeneRechnungen", $this->max),
+			'text' => $textHead.'<a class="paddingleft valignmiddle" href="'.DOL_URL_ROOT.'/compta/facture/list.php?search_status=1&sortfield=f.date_lim_reglement,f.ref&sortorder=ASC,ASC"><span class="badge">...</span></a>',
+			'limit' => dol_strlen($textHead),
 		);
 
 		if (!$user->hasRight('facture', 'lire')) {
@@ -63,20 +66,20 @@ class box_mahnung_offen extends ModeleBoxes
 			return;
 		}
 
-		// Offene Rechnungen mit optionalem LEFT JOIN auf letzte aktive Mahnung
-		$sql = "SELECT s.rowid as socid, s.nom as name, s.logo, s.email, s.entity,";
-		$sql .= " s.code_client, s.client,";
+		// Query wie box_factures_imp, plus Mahnstufe per Subquery
+		$sql = "SELECT s.rowid as socid, s.nom as name, s.code_client, s.client,";
+		$sql .= " s.logo, s.email, s.entity,";
 		$sql .= " f.rowid as facid, f.ref, f.type, f.datef as date,";
 		$sql .= " f.date_lim_reglement as datelimit,";
 		$sql .= " f.total_ht, f.total_tva, f.total_ttc,";
 		$sql .= " f.paye, f.fk_statut as status,";
-		$sql .= " COALESCE(SUM(pf.amount), 0) as am,";
-		// Letzte Mahnstufe per Subquery
+		$sql .= " SUM(pf.amount) as am,";
+		// Letzte aktive Mahnstufe
 		$sql .= " (SELECT m2.stufe FROM ".MAIN_DB_PREFIX."mahnung_mahnung as m2";
-		$sql .= "  WHERE m2.fk_facture = f.rowid AND m2.status NOT IN (".Mahnung::STATUS_STORNIERT.")";
+		$sql .= "  WHERE m2.fk_facture = f.rowid AND m2.status != ".((int) Mahnung::STATUS_STORNIERT);
 		$sql .= "  ORDER BY m2.stufe DESC LIMIT 1) as mahnstufe,";
 		$sql .= " (SELECT m3.date_mahnung FROM ".MAIN_DB_PREFIX."mahnung_mahnung as m3";
-		$sql .= "  WHERE m3.fk_facture = f.rowid AND m3.status NOT IN (".Mahnung::STATUS_STORNIERT.")";
+		$sql .= "  WHERE m3.fk_facture = f.rowid AND m3.status != ".((int) Mahnung::STATUS_STORNIERT);
 		$sql .= "  ORDER BY m3.stufe DESC LIMIT 1) as mahndatum";
 		$sql .= " FROM ".MAIN_DB_PREFIX."facture as f";
 		$sql .= " INNER JOIN ".MAIN_DB_PREFIX."societe as s ON s.rowid = f.fk_soc";
@@ -84,15 +87,13 @@ class box_mahnung_offen extends ModeleBoxes
 		$sql .= " WHERE f.entity IN (".getEntity('invoice').")";
 		$sql .= " AND f.paye = 0";
 		$sql .= " AND f.fk_statut = 1";
-		$sql .= " AND f.date_lim_reglement IS NOT NULL";
-		$sql .= " AND f.date_lim_reglement < '".$this->db->idate(dol_now())."'";
 		if (empty($user->socid) && !$user->hasRight('societe', 'client', 'voir')) {
-			$sql .= " AND s.rowid IN (SELECT sc.fk_soc FROM ".MAIN_DB_PREFIX."societe_commerciaux as sc WHERE sc.fk_user = ".((int) $user->id).")";
+			$sql .= " AND s.rowid = (SELECT sc.fk_soc FROM ".MAIN_DB_PREFIX."societe_commerciaux as sc WHERE sc.fk_soc = s.rowid AND sc.fk_user = ".((int) $user->id)." LIMIT 1)";
 		}
 		if ($user->socid) {
 			$sql .= " AND s.rowid = ".((int) $user->socid);
 		}
-		$sql .= " GROUP BY s.rowid, s.nom, s.logo, s.email, s.entity, s.code_client, s.client,";
+		$sql .= " GROUP BY s.rowid, s.nom, s.code_client, s.client, s.logo, s.email, s.entity,";
 		$sql .= " f.rowid, f.ref, f.type, f.datef, f.date_lim_reglement,";
 		$sql .= " f.total_ht, f.total_tva, f.total_ttc, f.paye, f.fk_statut";
 		$sql .= " ORDER BY f.date_lim_reglement ASC, f.ref ASC";
@@ -110,13 +111,11 @@ class box_mahnung_offen extends ModeleBoxes
 		$num = $this->db->num_rows($result);
 		$line = 0;
 		$l_due_date = $langs->trans('Late').' ('.strtolower($langs->trans('DateDue')).': %s)';
-		$totalHt = 0;
 
 		while ($line < min($num, $this->max)) {
 			$objp = $this->db->fetch_object($result);
 
 			$datelimit = $this->db->jdate($objp->datelimit);
-			$tageVerzug = (int) floor((dol_now() - $datelimit) / 86400);
 
 			$facturestatic->id = $objp->facid;
 			$facturestatic->ref = $objp->ref;
@@ -156,7 +155,7 @@ class box_mahnung_offen extends ModeleBoxes
 				$label = $labels[$stufe] ?? 'Stufe '.$stufe;
 				$mahnDatum = $objp->mahndatum ? dol_print_date($this->db->jdate($objp->mahndatum), 'day') : '';
 				$tooltip = $label.($mahnDatum ? ' vom '.$mahnDatum : '');
-				$mahnBadge = ' <span class="badge" style="background-color:'.$color.';color:#fff;font-size:0.75em;" title="'.dol_escape_htmltag($tooltip).'">'.$label.'</span>';
+				$mahnBadge = '<span class="badge" style="background-color:'.$color.';color:#fff;font-size:0.75em;" title="'.dol_escape_htmltag($tooltip).'">'.$label.'</span>';
 			}
 
 			// Spalte 1: Rechnung + Warnung
@@ -186,20 +185,19 @@ class box_mahnung_offen extends ModeleBoxes
 				'text' => dol_print_date($datelimit, 'day', 'tzuserrel'),
 			);
 
-			// Spalte 5: Tage Verzug
+			// Spalte 5: Status (wie Original)
 			$this->info_box_contents[$line][] = array(
-				'td' => 'class="center nowraponall"',
-				'text' => $tageVerzug.' T.',
+				'td' => 'class="right" width="18"',
+				'text' => $facturestatic->LibStatut($objp->paye, $objp->status, 3, $objp->am, $objp->type),
 			);
 
 			// Spalte 6: Mahnstufe
 			$this->info_box_contents[$line][] = array(
 				'td' => 'class="center nowraponall"',
-				'text' => !empty($mahnBadge) ? $mahnBadge : '<span class="opacitymedium">—</span>',
+				'text' => !empty($mahnBadge) ? $mahnBadge : '',
 				'asis' => 1,
 			);
 
-			$totalHt += (float) $objp->total_ht;
 			$line++;
 		}
 
@@ -209,7 +207,23 @@ class box_mahnung_offen extends ModeleBoxes
 		}
 
 		if ($num > 0) {
-			// Summenzeile
+			// Summe (wie Original: separate Query ohne LIMIT)
+			$sql2 = "SELECT SUM(f.total_ht) as total_ht";
+			$sql2 .= " FROM ".MAIN_DB_PREFIX."facture as f";
+			$sql2 .= " INNER JOIN ".MAIN_DB_PREFIX."societe as s ON s.rowid = f.fk_soc";
+			$sql2 .= " WHERE f.entity IN (".getEntity('invoice').")";
+			$sql2 .= " AND f.paye = 0 AND f.fk_statut = 1";
+			if ($user->socid) {
+				$sql2 .= " AND s.rowid = ".((int) $user->socid);
+			}
+			$resTotal = $this->db->query($sql2);
+			$totalHt = 0;
+			if ($resTotal) {
+				$objTotal = $this->db->fetch_object($resTotal);
+				$totalHt = (float) $objTotal->total_ht;
+				$this->db->free($resTotal);
+			}
+
 			$this->info_box_contents[$line][] = array(
 				'tr' => 'class="liste_total"',
 				'td' => 'class="liste_total"',