Automatic sign in for offline use

Hi,

I’m trying to set up RasPlex to talk to a Plex server running on a WD Passport Pro, that will mostly be used without any internet connectivity.

Some advice here suggested that it should be possible if you log in once to RasPlex, and enable auto login. However, on the 1.8 build I’m using (which I believe is the latest) this auto sign in option is greyed out:

Can anyone help? I’ll carry on testing just in case this is no longer required in the meantime.

Thanks

Andy