Very good service, clean, tidy, spacious and definitely very comfortable rooms.

How do I do this, I paid for it but I can't check in?

Just find another place and spend more money. The main road from the airport to this apartment is so crappy, with many holes and broken asphalt. Also, the mall beside doesn't have many stores open. They don't have a lobby, so you have to go to the basement and find someone to get you the key. Only 1 elevator works and doesn't have wifi. So far I don't recommend this place for staying. So hard to get in and out, from the apartment to the mall, also I tried to find a grab to pick me up but get rejected so many times🤦🏻‍♀️

AC leak, room access difficult. And at night looking for vehicles to the airport is difficult. It's a bit spoky too.