If your area is covered but your property is not in database, thus can't register, try check different roads nearby.

My area covered but not include my lot. After like a year going back and forth investigating and making noise at TM, one day Celcom decided to help me investigate.
They found that my property is available, but whoever installed the infra keyed in my lot to a small road nearby forming nonexistent, orphaned address.

When they finally come to my house to pull fiber, the contractor had to connect it to a dp 200m away on that erroneously assigned road, crossing main road two times, although there are two other dp within 50m from my house.

The level of stupidity involved in my fiber installation process is something to behold .