I have a chat plugin called Zopim installed on my site. I had trouble installing it in the first place so I had to submit the code into the header of the site instead.
The plugin seems to be slowing down the site significantly so I have decided to get rid of it for now at least as it seems to be having a very negative impact on sales conversions on the site.
So i went to Appearance - Editor - Header but the update edits button seems to have disappeared.
Instead it now says at the bottom of the page "you need to make this file writable before you can save your changes. See the Codex for more information."
Went to Codex but it is away over my head.
Anyone got a simple solution for getting rid of it?