Thanks for your responses so far! and your help in getting my issue resolved.
I decided to reflash the hyperbian image (version 2.0.0-alpha.10) and ran the following commands afterwards:
pi@HyperBian:~ $ sudo systemctl disable --now hyperion@pi
Removed /etc/systemd/system/multi-user.target.wants/hyperion@pi.service.
pi@HyperBian:~ $ sudo systemctl enable --now hyperion@root
Created symlink /etc/systemd/system/multi-user.target.wants/hyperion@root.service → /etc/systemd/system/hyperion@.service.
pi@HyperBian:~ $ sudo reboot
and it works!, the LED lit up! Hooray!!!
It must’ve been the software gremlins; I used exactly the same configurations and image, but for some reason it works now…
Now it’s time to install it behind the TV.
Thanks @Tim and @Trent5487676 ; one happy core-electronics customer here 
By the way, what is the suggestion you have here? I wonder if I can piggyback the power from a single power adapter
