UiRobot (application doesn't run) & Unattended Robot is Disconnected

Hello

Capture
On my previous computer, UiRobot Application could run/ be opened. And Unattended robot could be connected.

However, after changing my computer and assigned a new unattended robot to the machine, UiRobot cannot run/ be opened. And I am assuming this is why the unattended robot status is disconnected.

Could anyone advise me how I can solve this problem? or even identify the actual problem?

thanks in advance