How to ride the cheap LCC SCOOT. And why did you miss it? Narita-Taiwan B787-9

This is how to ride SCOOT, Singapore Airlines' LCC.
I boarded flight TR899, scheduled to depart from Narita Airport at 11:45 and arrive at Taiwan Taoyuan International Airport at 15:10.
On that day, something happened and I was unable to go through security inspection an hour before departure.
As a result, we will tell you what will happen in the case of LCC.
We also introduce Nine Hours, which you can get with Priority Pass.
Scoot and LCCs require check-in and security screening entry at least one hour in advance.
If you're late, you're out. Boarding time is also punctual, so please arrive at least 40 minutes before departure.
It is better to be in front of the boarding gate. There are also sudden gate changes.
■SCOOT Scoot information
・Free baggage up to 10kg
・In-flight meals and drinks are charged
・In-flight wifi, AC power available (charges apply)