Don’t install the 64-bit versions of their plugins. I’m not sure if this is specific to a particular Cubase version, but I struggled for several hours to get them to work. Their failure to do so caused Cubase to crash hard requiring the use of the hardware reset button on the PC. To say this is annoying is a huge understatement.
I finally reverted back to the 32-bit versions and wrote them a detailed email explaining what I observed and was able to find out.