Indeed, this part is working ?? thk.
Still a bug with auth process however: maybe forgot something.
I got when i wrote my mstdn domain (mstdn.io) and click on login:
Client authentication failed due to unknown client, no client authentication included, or unsupported authentication method.
I tried both with and without being logged in to mastodon before. Same result for the both. I use 2FA, maybe the source of problem.