Issue with downloading PanguWeathers's assets

I am having trouble downloading the necessary assets for running ai weather forecasting models like PanguWeather. Despite having attained the CDS API key, this is the error I am getting:
ecmwfapi.api.APIException: “ecmwf.API error 1: User ‘’ has no access to services/mars”
requests.exceptions.HTTPError: 400 Client Error: Bad Request for url: https://cds.climate.copernicus.eu/api/retrieve/v1/processes/reanalysis-era5-pressure-levels/execution
invalid request
None of the data you have requested is available yet, please revise the period requested. The latest date available for this dataset is: 2025-03-06 18:00

I am using a simple line of code to request downloading, which what I have found in multiple sites: ai-models --download-assets

I’d be glad if someone could help me out.