Trouble Converting OSC or MIDI messages to Key Commands

Hi, apologies as I'm fairly new to Open Stage Control.

I'm on a Mac. I've had some success connecting Open Stage Control to Cubase directly through MIDI messages, but now I'm trying to create shortcuts for Sibelius, which AFAIK doesn't support MIDI triggered shortcuts. So I'm trying to get Open Stage Control to trigger key commands. Most people online talk about using OSCulator or Bome's MIDI Translator. MidiKey2Key is PC only.

I'm having some troubles interfacing Open Stage Control with OSCulator, however, and I can't tell which program is at fault. I've posted an issue on their forum as well, which can be found here:

https://osculator.net/forum/forum/support/general/12153-trouble-receiving-messages-from-open-stage-control

Does anybody have experience using these two programs? Or perhaps know a better way of trying to do this? Help would be much appreciated, thanks!