FabFilter

When I add a plugin to a multichannel track in Reaper, the plugin shows only two outputs. Only Q3 will add the correct number of inputs and outputs. If I request VST channel count, this does not change. Any suggestion how I can use the plugins in multichannel tracks?
Thanks

Only Pro-Q 3, Pro-L 2 and Pro-R 2 support multichannel formats. All our other plug-ins only offer mono or stereo track widths.