I am getting the following Notices:
Is this something I should care about or is it something CharityEngine are going to fix automatically?
No need to worry about that; and nothing to do.
-- We need to make an update on our end; but everything will work fine in the meantime.
I'm not seeing a Climate Prediction project on my Linux machine (with Virtualbox capabilities). Does it require some sort of high-performance video card? Or .. ?
Different devices get different tasks, for a variety of reasons. So likely your device is getting other work instead.