diff --git a/list-generator/backend/app/services/pdf_generator.py b/list-generator/backend/app/services/pdf_generator.py
index 7f7864cd..d9141ad2 100644
--- a/list-generator/backend/app/services/pdf_generator.py
+++ b/list-generator/backend/app/services/pdf_generator.py
@@ -5,48 +5,56 @@ from weasyprint import HTML
 import datetime
 
 def generate_school_pdf(institution: str, date_info: str, list_type: str, students_csv_path: str, families_csv_path: str = None, output_dir: str = "/tmp") -> str:
-    try:
-        df = pd.read_csv(students_csv_path, sep=";", encoding="utf-8-sig")
-    except Exception:
+    # Try different separators and encodings
+    df = None
+    for sep in [";", ","]:
+        try:
+            test_df = pd.read_csv(students_csv_path, sep=sep, encoding="utf-8-sig", nrows=5)
+            if len(test_df.columns) > 1:
+                df = pd.read_csv(students_csv_path, sep=sep, encoding="utf-8-sig")
+                break
+        except Exception:
+            continue
+
+    if df is None:
         df = pd.read_csv(students_csv_path, sep=";", encoding="latin1")
-    df.columns = df.columns.str.strip()
+
+    df.columns = df.columns.str.strip().str.replace("\"", "")
+    print(f"Detected columns: {list(df.columns)}")
+
     col_mapping = {}
     for col in df.columns:
-        lower_col = col.lower()
-        if lower_col in ["vorname kind", "vorname"]:
+        lower_col = col.lower().strip()
+        if lower_col in ["vorname kind", "vorname", "first name"]:
             col_mapping[col] = "Vorname"
-        elif lower_col in ["nachname kind", "nachname"]:
+        elif lower_col in ["nachname kind", "nachname", "last name"]:
             col_mapping[col] = "Nachname"
-        elif lower_col in ["gruppe", "klasse"]:
+        elif lower_col in ["gruppe", "klasse", "group", "class"]:
             col_mapping[col] = "Klasse"
+
     df = df.rename(columns=col_mapping)
     df = df.fillna("")
-    if "Vorname" not in df.columns: df["Vorname"] = ""
-    if "Nachname" not in df.columns: df["Nachname"] = ""
-    if "Klasse" not in df.columns: df["Klasse"] = "Alle"
+
+    for col in ["Vorname", "Nachname", "Klasse"]:
+        if col not in df.columns:
+            df[col] = "Alle" if col == "Klasse" else ""
+
     df = df.sort_values(by=["Klasse", "Nachname", "Vorname"])
     grouped = df.groupby("Klasse")
     class_data = []
     for class_name, group in grouped:
-        students = group.to_dict("records")
-        class_data.append({"name": class_name, "students": students})
+        class_data.append({"name": class_name, "students": group.to_dict("records")})
+
     class_counts = [{"name": c, "count": len(g)} for c, g in grouped]
-    total_students = sum(c["count"] for c in class_counts)
+    total_students = len(df)
+
     template_dir = os.path.join(os.path.dirname(__file__), "..", "templates")
     env = Environment(loader=FileSystemLoader(template_dir))
     template = env.get_template("school_list.html")
     current_time = datetime.datetime.now().strftime("%d.%m.%Y %H:%M Uhr")
-    html_out = template.render(
-        institution=institution,
-        date_info=date_info,
-        class_counts=class_counts,
-        total_students=total_students,
-        class_data=class_data,
-        current_time=current_time
-    )
+    html_out = template.render(institution=institution, date_info=date_info, class_counts=class_counts, total_students=total_students, class_data=class_data, current_time=current_time)
     clean_inst = institution.replace(" ", "_").replace("/", "-")
-    time_str = datetime.datetime.now().strftime("%Y-%m-%d_%H-%M")
-    output_filename = f"Listen_{clean_inst}_{list_type}_{time_str}.pdf"
+    output_filename = f"Listen_{clean_inst}_{list_type}_{datetime.datetime.now().strftime(\"%Y-%m-%d_%H-%M\")}.pdf"
     output_path = os.path.join(output_dir, output_filename)
     HTML(string=html_out).write_pdf(output_path)
     return output_path