diff --git a/plugins/Toolbox/resources/qml/dialogs/CompatibilityDialog.qml b/plugins/Toolbox/resources/qml/dialogs/CompatibilityDialog.qml
index 06c1102811..32b4da4823 100644
--- a/plugins/Toolbox/resources/qml/dialogs/CompatibilityDialog.qml
+++ b/plugins/Toolbox/resources/qml/dialogs/CompatibilityDialog.qml
@@ -152,7 +152,7 @@ UM.Dialog{
 
         } // End of ScrollView
 
-        Cura.ActionButton
+        Cura.PrimaryButton
         {
             id: nextButton
             anchors.bottom: parent.bottom
@@ -160,6 +160,8 @@ UM.Dialog{
             anchors.margins: UM.Theme.getSize("default_margin").height
             text: catalog.i18nc("@button", "Next")
             onClicked: accept()
+            leftPadding: UM.Theme.getSize("dialog_primary_button_padding").width
+            rightPadding: UM.Theme.getSize("dialog_primary_button_padding").width
         }
     }
 }
diff --git a/plugins/Toolbox/resources/qml/dialogs/ToolboxLicenseDialog.qml b/plugins/Toolbox/resources/qml/dialogs/ToolboxLicenseDialog.qml
index 2c88ac6d5f..3e7cdc9df8 100644
--- a/plugins/Toolbox/resources/qml/dialogs/ToolboxLicenseDialog.qml
+++ b/plugins/Toolbox/resources/qml/dialogs/ToolboxLicenseDialog.qml
@@ -10,6 +10,7 @@ import QtQuick.Controls.Styles 1.4
 // TODO: Switch to QtQuick.Controls 2.x and remove QtQuick.Controls.Styles
 
 import UM 1.1 as UM
+import Cura 1.6 as Cura
 
 UM.Dialog
 {
@@ -51,18 +52,22 @@ UM.Dialog
     }
     rightButtons:
     [
-        Button
+        Cura.PrimaryButton
         {
-            id: acceptButton
-            anchors.margins: UM.Theme.getSize("default_margin").width
-            text: catalog.i18nc("@action:button", "Accept")
+            leftPadding: UM.Theme.getSize("dialog_primary_button_padding").width
+            rightPadding: UM.Theme.getSize("dialog_primary_button_padding").width
+
+            text: catalog.i18nc("@button", "Agree")
             onClicked: { handler.onLicenseAccepted() }
-        },
-        Button
+        }
+    ]
+
+    leftButtons:
+    [
+        Cura.SecondaryButton
         {
             id: declineButton
-            anchors.margins: UM.Theme.getSize("default_margin").width
-            text: catalog.i18nc("@action:button", "Decline")
+            text: catalog.i18nc("@button", "Decline and remove from account")
             onClicked: { handler.onLicenseDeclined() }
         }
     ]
diff --git a/plugins/Toolbox/src/CloudApiModel.py b/plugins/Toolbox/src/CloudApiModel.py
index 31c3139262..556d54cf88 100644
--- a/plugins/Toolbox/src/CloudApiModel.py
+++ b/plugins/Toolbox/src/CloudApiModel.py
@@ -18,3 +18,11 @@ class CloudApiModel:
         cloud_api_root=cloud_api_root,
         cloud_api_version=cloud_api_version,
     )
+
+    ## https://api.ultimaker.com/cura-packages/v1/user/packages/{package_id}
+    @classmethod
+    def userPackageUrl(cls, package_id: str) -> str:
+
+        return (CloudApiModel.api_url_user_packages + "/{package_id}").format(
+            package_id=package_id
+        )
diff --git a/plugins/Toolbox/src/CloudSync/CloudPackageManager.py b/plugins/Toolbox/src/CloudSync/CloudPackageManager.py
index ee57a1b90d..0cbc9eaa7a 100644
--- a/plugins/Toolbox/src/CloudSync/CloudPackageManager.py
+++ b/plugins/Toolbox/src/CloudSync/CloudPackageManager.py
@@ -16,3 +16,8 @@ class CloudPackageManager:
                                   data=data.encode(),
                                   scope=self._scope
                                   )
+
+    def unsubscribe(self, package_id: str) -> None:
+        url = CloudApiModel.userPackageUrl(package_id)
+        self._request_manager.delete(url=url, scope=self._scope)
+
diff --git a/plugins/Toolbox/src/CloudSync/SyncOrchestrator.py b/plugins/Toolbox/src/CloudSync/SyncOrchestrator.py
index 674fb68729..e97bdbcbc4 100644
--- a/plugins/Toolbox/src/CloudSync/SyncOrchestrator.py
+++ b/plugins/Toolbox/src/CloudSync/SyncOrchestrator.py
@@ -1,8 +1,10 @@
 import os
 from typing import List, Dict, Any, cast
 
+from UM import i18n_catalog
 from UM.Extension import Extension
 from UM.Logger import Logger
+from UM.Message import Message
 from UM.PluginRegistry import PluginRegistry
 from cura.CuraApplication import CuraApplication
 from .CloudPackageChecker import CloudPackageChecker
@@ -64,7 +66,10 @@ class SyncOrchestrator(Extension):
     # \param success_items: Dict[package_id, file_path]
     # \param error_items: List[package_id]
     def _onDownloadFinished(self, success_items: Dict[str, str], error_items: List[str]) -> None:
-        # todo handle error items
+        if error_items:
+            message = i18n_catalog.i18nc("@info:generic", "{} plugins failed to download".format(len(error_items)))
+            self._showErrorMessage(message)
+
         plugin_path = cast(str, PluginRegistry.getInstance().getPluginPath(self.getPluginId()))
         self._license_presenter.present(plugin_path, success_items)
 
@@ -78,15 +83,20 @@ class SyncOrchestrator(Extension):
             if item["accepted"]:
                 # install and subscribe packages
                 if not self._package_manager.installPackage(item["package_path"]):
-                    Logger.error("could not install {}".format(item["package_id"]))
+                    message = "Could not install {}".format(item["package_id"])
+                    self._showErrorMessage(message)
                     continue
                 self._cloud_package_manager.subscribe(item["package_id"])
                 has_changes = True
             else:
-                # todo unsubscribe declined packages
-                pass
+                self._cloud_package_manager.unsubscribe(item["package_id"])
             # delete temp file
             os.remove(item["package_path"])
 
         if has_changes:
             self._restart_presenter.present()
+
+    ## Logs an error and shows it to the user
+    def _showErrorMessage(self, text: str):
+        Logger.error(text)
+        Message(text, lifetime=0).show()
diff --git a/resources/themes/cura-light/theme.json b/resources/themes/cura-light/theme.json
index e5009d8633..de4c9ccb42 100644
--- a/resources/themes/cura-light/theme.json
+++ b/resources/themes/cura-light/theme.json
@@ -520,6 +520,7 @@
         "action_button": [15.0, 2.5],
         "action_button_icon": [1.0, 1.0],
         "action_button_radius": [0.15, 0.15],
+        "dialog_primary_button_padding": [3.0, 0],
 
         "radio_button": [1.3, 1.3],