Hi.  For the last several years I've just being using Multiplicity to control 2 machines.  I've decided to add a 3rd machine and have the original 2 setup and working and trying to add the 3rd.  All are on the same version - 3.5 Build 00096.km.  I used to have 6 PCs setup with Multiplicity, so it is something I've done in the past.

I originally purchased Multiplicity back in 2012 (or quite possibly earlier - that's the oldest date on the downloaded executables that I have).

My account with Stardock shows that I have the Pro version, but when I try and download it I get directed to download "MultiplicityPro_126_setup.exe"

On the primary when I am trying to add the 3rd PC in the Seamless tab, the existing secondary get moved out of the grid.  From this and the fact that my Pro license links to a "MultiplicityPro_126_setup.exe" download, I'm assuming that my Pro key (which won't work in the 3.5 version) isn't going to work and either Stardock has to upgrade the key for me (not sure what my long ago software purchase terms & conditions were) or I have to buy the Pro version - again...

Any help, pointers, etc are greatly appreciated!

Thanks.