If you are getting multiple values by on typing get mac command its because it is returning the MAC address of all the NICs connected with your system.
For the licence to get validate, any of the MAC address will be work fine.
Your username should be in format / which cane be obtained by whoami comamnd
The reason you are getting validation error in license because license file generated is not correct. Try generating a new license file.
Instead of killing application from task manager, go to system tray, right click on the EdgeVerve icon and then click on Automation studio in context menu. This will launch already opened instance of AssistEdge RPA CE.
How to generate new license file??
You need to generate new license from https://cedownload.assistedgerpa.com, same as earlier.
i tried doing the same twice i am facing the same problem
Aplologies for the inconvenience.
We have mailed you a new license file today which should work for you. Please give it a try and let us know.