I have noticed a recent change to the Admin navbar on my site pleancountrypark.org.uk, and as far as I know it's nothing I've done!

I am using Bootstrap theme Flatly and the Admin navbar has moved up from the bottom of the screen and no longer contains the login, membership and website management buttons. The buttons have relocated to the page footer and the menu text has changed to the background colour, only visible with mouseover. As far as I am aware I have not made any changes to the website to cause this to happen.

I played around with the theme options and when I removed a script from the "raw footer html"  this reset everything to normal. There have been no recent changes to the site, that script (statcounter script) has been there since I created the website and I would like it to remain. Any ideas?