[Unable to change server for a new Unity project in order to retrieve data from a project already started by my colleague]

Hello everyone,

I hope you are all well.

I'm trying to connect a new Unity project to a server I created on PlasticSCM without success.
But when I launch the PlasticSCM window on Unity, this happens (check the three screenshots on Unity).
The server I want to use is grayed out.

I already went to Plastic SCM and retrieved everything my colleague had already done on the project.

But then I couldn't connect it to my Unity.

Thanks for your help,

Alex Le Bras