403 error in Notebook 3 in "Learn to Use the Cognite Python SDK"

In “Learn to Use the Cognite Python SDK” Learn to Use the Cognite Python SDK, in notebook 3 (using-cognite-python-sdk/notebooks/3_Create_Update_Insert.ipynb at main · cognitedata/using-cognite-python-sdk), when I run it, it authenticates, and it all works (including notebook 1 & 2), up to notebook 3, cell 5.

I get the following 403 error:
 

Here is the text output of the error:
“””
CogniteAPIError: Not allowed to perform instances action: WRITE | code: 403 | X-Request-ID: 3e84dcdf-699a-92e5-9481-7eb475505e37 | cluster: westeurope-1 | project: ds-basics The API Failed to process some items: - Successful (2xx): 0 item(s) - Unknown (5xx): 0 item(s) - Failed (4xx): 2 item(s)
“””

Can I please have advice on what to do?