Unable to generate Trello API Token for custom Power-Up (App not found)

[Grégoire Laugraud]

Hi,

I created a custom Power-Up and got an API Key and Secret.

But I cannot generate a user Token.

The documentation shows the /1/authorize URL, but I always get “App not found”, even after adding my n8n.cloud domain to the allowed origins.

👉 What is the current official way to generate a Trello user Token for API integrations (like n8n)?

Thanks a lot,

Grégoire