diff --git a/connector_opencart/__manifest__.py b/connector_opencart/__manifest__.py
index 324e8593..b8b9c980 100644
--- a/connector_opencart/__manifest__.py
+++ b/connector_opencart/__manifest__.py
@@ -2,7 +2,7 @@
 
 {
     'name': 'Opencart Connector',
-    'version': '15.0.1.0.0',
+    'version': '16.0.1.0.0',
     'category': 'Connector',
     'depends': [
         'account',
diff --git a/connector_opencart/components/importer.py b/connector_opencart/components/importer.py
index 7de2bfc8..319f1312 100644
--- a/connector_opencart/components/importer.py
+++ b/connector_opencart/components/importer.py
@@ -100,7 +100,7 @@ class OpencartImporter(AbstractComponent):
                     binding_model._name, external_id
                 )
             # Or the binding may not have its external_id set if you raise an exception.
-            self.env['base'].flush()
+            self.env.flush_all()
             return True
         if binding_model == 'opencart.product.template' and record.backend_id.so_require_product_setup:
             # Though this is not the "right" place to do this,
diff --git a/connector_opencart/models/opencart/backend.py b/connector_opencart/models/opencart/backend.py
index c347c254..9a1ab711 100644
--- a/connector_opencart/models/opencart/backend.py
+++ b/connector_opencart/models/opencart/backend.py
@@ -177,8 +177,8 @@ class OpencartBackend(models.Model):
         return self._date_plus_hours(date, -(self.server_offset_hours or 0))
 
     def _date_plus_hours(self, date, hours):
+        if date and isinstance(date, str):
+            date = fields.Datetime.from_string(date)
         if not hours:
             return date
-        if isinstance(date, str):
-            date = fields.Datetime.from_string(date)
         return date + timedelta(hours=hours)
diff --git a/connector_opencart/models/sale_order/common.py b/connector_opencart/models/sale_order/common.py
index eb0481f7..fbe2dcde 100644
--- a/connector_opencart/models/sale_order/common.py
+++ b/connector_opencart/models/sale_order/common.py
@@ -84,6 +84,14 @@ class SaleOrderLine(models.Model):
         inverse_name='odoo_id',
         string="Opencart Bindings",
     )
+    
+    def _get_display_price(self):
+        # WARNING do NOT remove the line to read the currency_id
+        # in 16.0 as of 2023-03-13
+        # this fixes a res.currency bug on computing price
+        # the statement has very little effect other than that
+        self.read(['currency_id'])
+        return super()._get_display_price()
 
 
 class SaleOrderAdapter(Component):
diff --git a/connector_opencart/views/opencart_backend_views.xml b/connector_opencart/views/opencart_backend_views.xml
index 8245554a..40952b96 100644
--- a/connector_opencart/views/opencart_backend_views.xml
+++ b/connector_opencart/views/opencart_backend_views.xml
@@ -18,15 +18,11 @@
                         <field name="name" class="oe_inline" />
                     </h1>
                     <group name="opencart" string="Opencart Configuration">
-                        <notebook name="api">
-                            <page string="API" name="api">
-                                <group colspan="4" col="4">
-                                    <field name="base_url"/>
-                                    <field name="restadmin_token" password="1"/>
-                                    <field name="server_offset_hours"/>
-                                </group>
-                            </page>
-                        </notebook>
+                        <group colspan="4">
+                            <field name="base_url"/>
+                            <field name="restadmin_token" password="1"/>
+                            <field name="server_offset_hours"/>
+                        </group>
                     </group>
                     <group name="main_configuration" string="Main Configuration">
                         <group name="order_configuration" string="Order Defaults">
@@ -50,38 +46,32 @@
                             <field name="so_require_product_setup"/>
                         </group>
                     </group>
-                    <notebook name="import_config">
-                        <page name="import" string="Imports">
-                            <p class="oe_grey oe_inline">
-                                By clicking on the buttons,
-                                you will initiate the synchronizations
-                                with Opencart.
-                                Note that the import or exports
-                                won't be done directly,
-                                they will create 'Jobs'
-                                executed as soon as possible.
-                            </p>
-                            <p class="oe_grey oe_inline">
-                                Once imported,
-                                some types of records,
-                                like the products or categories,
-                                need a manual review.
-                                You will find the list
-                                of the new records to review
-                                in the menu 'Connectors > Checkpoint'.
-                            </p>
-                            <group name="import_since">
-                                <field name="import_orders_after_date"/>
-                                <field name="import_orders_after_id"/>
-                                <button name="import_sale_orders"
-                                    type="object"
-                                    class="oe_highlight"
-                                    string="Import in background"/>
-                            </group>
-
-                        </page>
-
-                    </notebook>
+                    <group name="import_since" string="Imports">
+                        <p class="oe_grey oe_inline" colspan="2">
+                            By clicking on the buttons,
+                            you will initiate the synchronizations
+                            with Opencart.
+                            Note that the import or exports
+                            won't be done directly,
+                            they will create 'Jobs'
+                            executed as soon as possible.
+                        </p>
+                        <p class="oe_grey oe_inline" colspan="2">
+                            Once imported,
+                            some types of records,
+                            like the products or categories,
+                            need a manual review.
+                            You will find the list
+                            of the new records to review
+                            in the menu 'Connectors &gt; Checkpoint'.
+                        </p>
+                        <field name="import_orders_after_date"/>
+                        <field name="import_orders_after_id"/>
+                        <button name="import_sale_orders"
+                            type="object"
+                            class="oe_highlight"
+                            string="Import in background"/>
+                    </group>
                 </sheet>
             </form>
         </field>