appearance editor missing 4.1.1

Good morning,

I am banging my head against a wall..

I haven’t used WordPress for a few years and I am no expert. I have just created a new site it is self hosted on 1&1 I used there 1 click install (free/full version) and installed BBpress with a Motif theme.

It works well but I want to edit the php of the footer and the width of the page etc. I would normally open up the theme editor under appearance but it is not there?

I have disabled all the plugins and re installed the standard themes again but still no option what am I doing wrong?