how do I uninstall license on computer to put on new one?

I am using just one of my two node-locked perpetual licenses.  It is only two weeks since I bought Unfold3D.  I want to take the license off this old desktop to put it on the new one I just got set up.  I do not know how to do that.

Also I tried to use the second of my two licenses on this new computer (thinking I could use the uninstalled license on my laptop later) but I am not sure how to do this.  When I open the program it opens the Unfold3D License Activation window.  I point it to where the license is stored, the one I got in my email, it is only 2k in size.  it then displays the license status.  But it will not let me "Run" Unfold3d.

I am stuck at this point.  I need help.

Thanks