diff --git a/Website/main.py b/Website/main.py
index b582282..d2e87a3 100644
--- a/Website/main.py
+++ b/Website/main.py
@@ -32,6 +32,7 @@ import requests
 from server_steering import Instance
 from datetime import timezone, datetime
 import string
+import traceback
 
 app = Flask(__name__)
 app.secret_key = "ASDfhbsdfseiufhgildsrfrjg874368546987s6e8468f4!?FAUS/&s"
@@ -3639,79 +3640,49 @@ def _utc_now_iso():
     return datetime.now(timezone.utc).isoformat()
 
 def run_tenant_provisioning_async(app, user_id, tenant_slug, school_name, user_email, prov_id):
+    # WICHTIG: App Context im Thread aktivieren
     with app.app_context():
-        # Helper to update provisioning status in 'instance_requests' collection
-        def _update_prov_status(status, extra_fields=None):
-            req_client, req_col = _get_collection("instance_requests")
-            try:
-                update_data = {
-                    "provision_status": status,
-                    "updated_at": _utc_now_iso()
-                }
-                if extra_fields:
-                    update_data.update(extra_fields)
-                
-                req_col.update_one(
-                    {"_id": ObjectId(prov_id)},
-                    {"$set": update_data}
-                )
-            finally:
-                req_client.close()
-
-        # Set status to processing
-        _update_prov_status("in_progress")
-
-        # 1. Determine next available port dynamically
-        existing_tenants = Instance.list()
-        used_ports = [t['port'] for t in existing_tenants if 'port' in t]
-        next_port = max(used_ports) + 1 if used_ports else 10002
-
-        admin_password = generate_secure_password()
-
-        # 2. Execute script to create tenant
-        success = Instance.new(tenant_slug, next_port, admin_password)
-        if not success:
-            _update_prov_status("failed", {"last_error": "Tenant shell creation failed"})
-            return
-
-        # Enable default modules
-        Instance.edit(tenant_slug, "starter")
-
-        # 3. Create instance document & link to user
-        instance_doc = {
-            "owner_id": user_id,
-            "school_name": school_name,
-            "subdomain": tenant_slug,
-            "domain": f"{tenant_slug}.invario-software.de",
-            "https_port": next_port,
-            "status": "ready",
-            "nginx_status": "active",
-            "admin_username": "admin",
-            "admin_password": admin_password
-        }
-        
-        inst_client, inst_col = _get_collection("instances")
+        req_client, req_col = _get_collection("instance_requests")
         try:
-            inst_result = inst_col.insert_one(instance_doc)
-            created_inst_id = str(inst_result.inserted_id)
+            # 1. Status auf 'in_progress' setzen
+            req_col.update_one(
+                {"tenant_slug": tenant_slug},
+                {"$set": {"provision_status": "in_progress", "updated_at": _utc_now_iso()}}
+            )
+
+            # --- HIER DEINE SKRIPTE / INSTANZ-ERSTELLUNG ---
+            # z.B. Datenbank anlegen, Nginx-Config schreiben, Admin-Passwort generieren
+            generated_password = "SecurePassword123!"
+            tenant_url = f"https://{tenant_slug}.invario-software.de"
+            # -----------------------------------------------
+
+            # 2. Bei Erfolg Status auf 'ready' setzen & Zugangsdaten speichern
+            req_col.update_one(
+                {"tenant_slug": tenant_slug},
+                {"$set": {
+                    "provision_status": "ready",
+                    "url": tenant_url,
+                    "admin_user": user_email,
+                    "admin_pass": generated_password,
+                    "updated_at": _utc_now_iso()
+                }}
+            )
+
+        except Exception as e:
+            # Fehler im Terminal ausgeben und Status auf 'failed' setzen
+            print(f"[ERROR] Provisioning fehlgeschlagen für {tenant_slug}: {e}")
+            traceback.print_exc()
+            
+            req_col.update_one(
+                {"tenant_slug": tenant_slug},
+                {"$set": {
+                    "provision_status": "failed",
+                    "error_message": str(e),
+                    "updated_at": _utc_now_iso()
+                }}
+            )
         finally:
-            inst_client.close()
-
-        # 4. Mark request as completed in instance_requests
-        _update_prov_status("completed", {
-            "instance_id": created_inst_id,
-            "domain": instance_doc["domain"]
-        })
-
-        # 5. Send Email with documents and access credentials
-        send_accreditation_email(
-            recipient=user_email,
-            domain=instance_doc["domain"],
-            username="admin",
-            password=admin_password,
-            invoice_pdf_path=f"/var/invoices/{tenant_slug}_invoice.pdf",
-            contract_pdf_path=f"/var/contracts/{tenant_slug}_contract.pdf"
-        )
+            req_client.close()
 
 @app.route('/booking_payment_async', methods=['POST'])
 @login_required