Librem 5 Matrix call and chat

Hello,

I have received my Librem 5 and would like to make calls via Matrix. Does this work already?

Do I need Librem one “Get Everything” for this? It does not work with the free version. I can’t log in with it under “Settings - Online Accounts - Librem One”.
When I add the free account in chats, I can only be contacted, I can not start my own chat.

As SIP I can not add the free variant either.

I have the latest updates.

Can someone please help me?

Thanks