Add Nello in Homey as device doesn't work anymore

I removed by incident my Nello device in Homey. I want to re-add it but it does’nt work anymore. The callback to Nello falls in a timeout.

https://callback.athom.com/oauth2/?token=5deb83baf3bb300c005bf230&url=https%3A%2F%2Fauth.nello.io%2Foauth%2Fauthorize%2F%3Fstate%3D0a448…………-9cd3-1cc584d7a6ba%26client_id%3D5d965aaf-190f-…6914ba45b1e%26response_type%3Dcode%26scope%3Duser%26redirect_uri%3Dhttps%253A%252F%252Fcallback.athom.com%252Foauth2%252Fcallback

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