Blue light not coming on, flickering lights in single pole setup

Hello (roommate here), is there an alternative option in Canada? All of the things mentioned in this thread apply in our case:

We’re also not seeing any indication that the switch itself works, is there something we can do to test the switch itself without a neutral wire?

I’m hesitant to go hunting for a product which we don’t understand, seems not to be rated for fire safety in our country, and is unavailable via trusted providers here.