LogMeIn Rescue popup on desktop

I have discovered where the files for this are located:  C/User//appdate/local.  When I try to delete these files I receive the message "cannot be deleted, files used elsewhere.  When I open Norton "Startup" option, it appears as opn and when I click to turn it off and then "apply" iot remains on.  This popup is increasingly annoying as it delays startup of my files..

 

Grateful for assistance on how to remove this

 

Theodora