@Fabrice CARNISI
Currently, Azure DevOps is not supported on Microsoft Q&A. Please check this [supported products list here] (more to be added later on).
The Azure DevOps team and community are active and answering questions on https://developercommunity.visualstudio.com/spaces/21/index.html
I would recommend posting your question there and DevOps experts will guide you.
You can also ask for help on Stack overflow: https://stackoverflow.com/questions/tagged/azure-devops
or request for support here: https://azure.microsoft.com/en-us/support/devops/
If you have any further queries related to Q&A supported services, do let me know in the comments.