Persistant pop up

Bobbywolly

Registered
For a few weeks now this pop up has randomly appeared when I have been on the internet using either the Chrome or Boat browsers on my Samsung S2 tablet and it's driving me nuts. The bottom left corner provides short cuts to recent apps and the top half is some random advert. Does anyone know how to get rid of it, any help would be appreciated.Screenshot_20170904-164601~01.png
 
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