Robotlist lite how to remove sign in option

Hi,
I have a website developed by Robolist Lite. It seems within the theme there is an inbuilt function where it shows a “XLOGO Sign In” option which basically when pressed reverts to the wp-admin page i.e. wordpress.com login page. How do I remove it? So far I have tried going to users under the theme and unchecking the show toolbar, I have added some css code but it is still as stubborn to disappear. Please can you offer me any suggestions. Looks like theres little support on the Robolist Lite support group.
Can you suggest a plugin that will do the job or if not as I cannot code at all, suggest how I can add some customized css from the above html code.
Thanks