403 "Invalid API key or access to this API has been disallowed" despite valid key and usage under limit

[mmerdes]

Dear gsdp,

This is due to an outdated API address.
Please check this announcement for further details:

Reducing the quota of deprecated API `api.openrouteservice.org`

Dear users, since April 28th, 2026, the URL api.openrouteservice.org has been officially deprecated in favour of api.heigit.org. Details can be found in this announcement. We have noticed that since then, less than 5% of all API Requests are using the new API. To give our users the possibility to gracefully migrate their applications, analyses and workflows, we have decided to not shut down api.openrouteservice.org directly, but rather reduce the quota of all API keys when using the deprecat…

Cheers,
Matthias