I can see that you have 2 plugin (VSTi, and VST3), the VSTi is the one you want to use in order to route the MIDI.
It seems that FL Studio is combining your VST and VST3 version in the list. There is an option here (bottom left):
I can see that you have 2 plugin (VSTi, and VST3), the VSTi is the one you want to use in order to route the MIDI.
It seems that FL Studio is combining your VST and VST3 version in the list. There is an option here (bottom left):
