Plugin menu option missing from dashboard

I have recently started a ww.wp.xz.cn website, hosted by Green Geeks, and have version 4.4.1 running (did a manual update to be sure). I am trying to install some plugins but my dashboard menu is not showing the plugin option… which is making it quite difficult to add plugins!

I’ve read a few posts with similar problems but most seem to be resolved by updating, which I’ve done already.

I’ve also read a few posts suggesting I need to access the “Network Admin’s Settings” but I cannot see any link to it from my dashboard. As far as I can tell this only becomes an option if you set up a multisite network but I only need one site and I assume I should be able to add plugins no matter how many sites i have. Is this correct?

Any suggestions would be greatly appreciated, cheers.