Same, It seems this is out of our control, no matter which steps is taken to troubleshoot the device still shows as connected and active deployment. To ensure that services are removed from your PC you can also use CMD as ADMIN and type the following command to make sure agent is removed from your machine:
sc delete "Automation Anywhere Bot Agent"
Although, I did this also and it did not helps, seems somewhere an active deployment is running lol
Have any one got a solution for this...
I was finally able to delete my device just now. The old task still shows in history as pending, but I am now able to run new automations.