diff --git a/examples/copernicus_dataspace.ipynb b/examples/data-spaces/copernicus_dataspace.ipynb
similarity index 100%
rename from examples/copernicus_dataspace.ipynb
rename to examples/data-spaces/copernicus_dataspace.ipynb
diff --git a/examples/data_usage.ipynb b/examples/data_usage.ipynb
index 2af65696..a119fd25 100644
--- a/examples/data_usage.ipynb
+++ b/examples/data_usage.ipynb
@@ -29,16 +29,33 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Connect to the Virtual Data Trustee"
+    "## Note\n",
+    "\n",
+    "1. It is important that the Geo Engine is running with\n",
+    "```toml\n",
+    "[quota]\n",
+    "mode = \"track\"\n",
+    "```\n",
+    "\n",
+    "2. You have to do some work beforehand to get the data from the log.\n",
+    "\n",
+    "This is a simple example to show how to access the log."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Connect to Geo Engine"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
-    "ge.initialize(\"http://localhost:3030/api\", (\"admin@localhost\", \"adminadmin\")) # TODO: load from .env for demo TODO: set remote url"
+    "ge.initialize(\"http://localhost:3030/api\", (\"admin@localhost\", \"adminadmin\"))"
    ]
   },
   {
@@ -296,7 +313,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -312,6 +329,9 @@
    ],
    "source": [
     "df = ge.data_usage_summary(ge.UsageSummaryGranularity.MINUTES)\n",
+    "if df.empty:\n",
+    "    print('No data usage found')\n",
+    "    exit()\n",
     "df['timestamp'] = pd.to_datetime(df['timestamp']).dt.tz_localize(None)\n",
     "\n",
     "pivot_df = df.pivot(index='timestamp', columns='data', values='count').fillna(0)\n",
@@ -324,13 +344,6 @@
     "plt.legend(title='Data')\n",
     "plt.show()"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {
diff --git a/examples/plots.ipynb b/examples/plots.ipynb
index 5b6a1383..d14eb5f1 100644
--- a/examples/plots.ipynb
+++ b/examples/plots.ipynb
@@ -10,11 +10,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
     "from datetime import datetime\n",
+    "from IPython.display import display\n",
     "\n",
     "import geoengine as ge"
    ]
diff --git a/test_all_notebooks.py b/test_all_notebooks.py
index f667931c..73d93846 100755
--- a/test_all_notebooks.py
+++ b/test_all_notebooks.py
@@ -7,13 +7,6 @@
 import shutil
 import sys
 
-# TODO: fix the blacklisted notebooks
-BLACKLIST = [
-    'copernicus_dataspace.ipynb',
-    'data_usage.ipynb',
-    'plots.ipynb',
-]
-
 
 def eprint(*args, **kwargs):
     '''Print to stderr.'''
@@ -57,9 +50,6 @@ def main() -> int:
             if not file.endswith('.ipynb'):
                 eprint(f"Skipping non-notebook file {file}")
                 continue
-            if file in BLACKLIST:
-                eprint(f"Skipping blacklisted notebook {file}")
-                continue
             notebook_path = os.path.join(root, file)
             if not run_test_notebook(notebook_path):
                 return -1