diff --git a/website_sale_restrict_sepa_dd/__init__.py b/website_sale_restrict_sepa_dd/__init__.py
index 7fbcfccd..4ece112b 100644
--- a/website_sale_restrict_sepa_dd/__init__.py
+++ b/website_sale_restrict_sepa_dd/__init__.py
@@ -2,3 +2,4 @@
 #
 # SPDX-License-Identifier: AGPL-3.0-or-later
 from . import models
+from . import controllers
diff --git a/website_sale_restrict_sepa_dd/controllers/__init__.py b/website_sale_restrict_sepa_dd/controllers/__init__.py
new file mode 100644
index 00000000..b71b9fca
--- /dev/null
+++ b/website_sale_restrict_sepa_dd/controllers/__init__.py
@@ -0,0 +1,4 @@
+# SPDX-FileCopyrightText: 2024 Coop IT Easy SC
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+from . import main
diff --git a/website_sale_restrict_sepa_dd/controllers/main.py b/website_sale_restrict_sepa_dd/controllers/main.py
new file mode 100644
index 00000000..1fe784cc
--- /dev/null
+++ b/website_sale_restrict_sepa_dd/controllers/main.py
@@ -0,0 +1,57 @@
+# SPDX-FileCopyrightText: 2024 Coop IT Easy SC
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+from odoo import http
+from odoo.http import request
+
+from odoo.addons.website_sale.controllers.main import WebsiteSale
+
+
+class WebsiteSaleRestrictSEPADD(WebsiteSale):
+    @http.route(
+        ["/shop/cart/update"],
+        type="http",
+        auth="public",
+        methods=["POST"],
+        website=True,
+    )
+    def cart_update(
+        self,
+        product_id,
+        add_qty=1,
+        set_qty=0,
+        product_custom_attribute_values=None,
+        no_variant_attribute_values=None,
+        express=False,
+        **kwargs
+    ):
+        sale_order = request.website.sale_get_order(force_create=True)
+        if sale_order.state != "draft":
+            request.session["sale_order_id"] = None
+            sale_order = request.website.sale_get_order(force_create=True)
+
+        warning = sale_order.check_product_compatibility(int(product_id))
+
+        request.session["website_sale_cart_warning"] = warning
+
+        if warning:
+            return request.redirect("/shop/cart")
+
+        return super().cart_update(
+            product_id=product_id,
+            add_qty=add_qty,
+            set_qty=set_qty,
+            product_custom_attribute_values=product_custom_attribute_values,
+            no_variant_attribute_values=no_variant_attribute_values,
+            express=express,
+            **kwargs
+        )
+
+    @http.route(["/shop/cart"], type="http", auth="public", website=True, sitemap=False)
+    def cart(self, access_token=None, revive="", **post):
+        warning = request.session["website_sale_cart_warning"]
+        del request.session["website_sale_cart_warning"]
+        response = super().cart(access_token=access_token, revive=revive, **post)
+        response.qcontext["website_sale_cart_warning"] = warning
+        return response
diff --git a/website_sale_restrict_sepa_dd/models/sale_order.py b/website_sale_restrict_sepa_dd/models/sale_order.py
index 35ae221f..ab7696e3 100644
--- a/website_sale_restrict_sepa_dd/models/sale_order.py
+++ b/website_sale_restrict_sepa_dd/models/sale_order.py
@@ -47,37 +47,45 @@ def _compute_only_sepa_dd_payment(self):
                 order.order_line.mapped("product_id").mapped("only_sepa_dd_payment")
             )
 
-    def _cart_update(self, product_id, line_id=None, add_qty=0, set_qty=0, **kwargs):
-        """Prevent incompatible product to be added to the cart."""
+    def check_product_compatibility(self, product_id):
         self.ensure_one()
         product = self.env["product.product"].browse(product_id).exists()
         warning = ""
+        only_sepa_dd_product = self.order_line.mapped("product_id").filtered(
+            lambda p: p.only_sepa_dd_payment
+        )
+        allow_sepa_dd_payment = all(
+            self.order_line.mapped("product_id").mapped("allow_sepa_dd_payment")
+        )
         if product:
-            only_sepa_dd_product = self.order_line.mapped("product_id").filtered(
-                lambda p: p.only_sepa_dd_payment
-            )
-            allow_sepa_dd_payment = all(
-                self.order_line.mapped("product_id").mapped("allow_sepa_dd_payment")
-            )
             if only_sepa_dd_product and not product.allow_sepa_dd_payment:
                 # This product cannot be added
-                add_qty, set_qty = None, 0
                 warning = _(
                     f"Product {product.name} cannot be added to cart "
                     "because product(s) : "
                     f"{', '.join(p.name for p in only_sepa_dd_product)} "
                     "must be payed by SEPA Direct Debit and product "
                     f"{product.name} cannot be payed by such method."
+                    "Please process this order first, or clear "
+                    f"the order."
                 )
             elif not allow_sepa_dd_payment and product.only_sepa_dd_payment:
-                add_qty, set_qty = None, 0
                 warning = _(
                     f"Product {product.name} cannot be added to cart "
                     "because other products in the cart does not allow "
                     "SEPA Direct Debit as payment method and "
                     f"{product.name} must be payed with such a method."
+                    "Please process this order first, or clear it."
                 )
+        return warning
 
+    def _cart_update(self, product_id, line_id=None, add_qty=0, set_qty=0, **kwargs):
+        """Prevent incompatible product to be added to the cart."""
+        self.ensure_one()
+        warning = self.check_product_compatibility(product_id)
+        if warning:
+            add_qty = None
+            set_qty = 0
         values = super()._cart_update(
             product_id=product_id,
             line_id=line_id,
diff --git a/website_sale_restrict_sepa_dd/views/templates.xml b/website_sale_restrict_sepa_dd/views/templates.xml
index 9f22585d..70f97017 100644
--- a/website_sale_restrict_sepa_dd/views/templates.xml
+++ b/website_sale_restrict_sepa_dd/views/templates.xml
@@ -1,20 +1,14 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <odoo>
 
-    <template id="product" inherit_id="website_sale.product">
-        <xpath expr="//div[@id='o_wsale_cta_wrapper']" position="attributes">
-            <attribute name="t-if">not product.only_sepa_dd_payment</attribute>
-        </xpath>
-        <xpath expr="//div[@id='o_wsale_cta_wrapper']" position="after">
+    <template id="cart_restrict_sepa_dd" inherit_id="website_sale.cart">
+        <xpath expr="//t[@t-call='website_sale.cart_lines']" position="before">
             <div
-                t-else=""
-                id="o_subscription_wrapper"
-                class="d-flex flex-wrap align-items-center"
+                t-if="website_sale_cart_warning"
+                class="mt8 mb8 alert alert-danger"
+                role="alert"
             >
-                <a class="btn btn-lg btn-primary" href="/subscription/process">
-                    <i class="fa fa-shopping-cart me-2" />
-                    <span style="font-weight: bold">SUBSCRIBE</span>
-                </a>
+                <t t-out="website_sale_cart_warning" />
             </div>
         </xpath>
     </template>