I bought a ticket from Singapore to Hong Kong on May 6, and a ticket from Hong Kong to Kolkata (my hometown in India).
The issue is, my pre-arrival registration to Hong Kong was rejected, and I can't apply for a Hong Kong visa due to time constraints. So I cancelled my May 6 ticket from Singapore to Hong Kong.
Now, I can't cancel my May 11 ticket from HKG to Kolkata as it's non-cancellable (cheap ticket).
So can I buy a ticket to Hong Kong from Singapore on May 11 and board the Kolkata flight (it's an AirAsia flight)? For this do I have to exit the HKG airport transit area (to get my boarding pass)? I can't do that since I need visa for that.