Insolvency API issue companies house

https://developer-specs.company-information.service.gov.uk/companies-house-public-data-api/reference/insolvency/get

only basic authentication headers

We tried this
[https://api.company-information.service.gov.uk/company/{companyNumber}/registered-office-address]
this works with the same authentication.

This used to work, and we have no code change from our side. We want to know anything has changed in the API side.