I sent in a support request to Roon for this issue and while they responded initially they have now ignored me for a month.
I will not be renewing.
They have completely lost the plot.

Main: Marantz Cinema 50, Meridian 271, DSP7200.2, DSP5200HC, DSP5000 rears, Meridian 210.
PC/Headphones: Mytek Liberty II, Sansui CA-F1, Sansui B-2301, Sennheiser HD800, Kef R3