That’s the only app that I can see that may manage your SEO, so maybe contact the developers and see what they have to say. Also, I would contact any of the other SEO apps that you have uninstalled and check to make sure all code is removed. You can see a list of your uninstalled apps in your apps tab.
Thank you so much for all of your help – much appreciated 
No problem, sorry I couldn’t help more. Have a great evening.