Trouble with HaLion Sonic SE 3.5.10

I recently upgraded to Cubase 12 Elements, but I just downloaded and installed HaLion Sonic SE 3.5.10. However, I have connected my PC to my Yamaha MOXF8, unfortunately, I hear no sound when pressing the keys on my keyboard, but do hear sound when I press the keys on HaLion Sonic. I have checked the audio connections in both Cubase & MOXF8, but everything is fine. Would appreciate someone’s help with this matter.

BTW, I’m on Windows 11 & my PC is a Dell G5 (32 GB of RAM & 2TB SSD drive).