Code 400. User location is not supported for the API use. Status: FAILED_PRECONDITION

Since a few days I started to receive errors:

Response: error processing text: failed to generate content: client error. Code: 400, Message: User location is not supported for the API use., Status: FAILED_PRECONDITION, Details: []

I’m using Gemini 2.0 Flash models on a free plan for development. I’m receiving these errors when hosting my backend server on a VPS (Hetzner, Germany).

Week ago everything was working OK.
When doing requests directly from my computer everything is OK.

P.S. I’m located in Germany, server is in Germany.