I would 1st reset the firewall to defaults
2. ensure you have the printer spooler allowed in Internet connections for programs.
Maybe the reset will fit the dual appearance though you can delete all and see what Mcafee detects.
I hear they could be having issues with subscriptions maybe if no solution soon call customer service and see if they can assist
Please follow the instructions here to run the subscription repair tool that would correct the subscription date issues.
Additionaly, while running the tool, you would be prompted to select your current subscriptions, please select McAfee Total protection and continue.
Follow these steps on all 3 affected PC’s and get back if any issues.