No permission to access endpoint

I have been able to get the historical total crypto market cap, but today I found out that I cannot access it anymore. This is the url that I use:

https://api.nomics.com/v1/market-cap/history?key=****&start=2021-01-01T00%3A00%3A00Z&format=csv

The response I receive is:
“You don’t have permissions to access this endpoint. Check your API key and our documentation at docs.nomics.com for details.”

Not sure why this is the case. Appreciate any help! Thank you.

Hi! Unfortunately, historical data is no longer available with our free plans.