As you can see from the screenshot of your neighbours number/address, there is a waiting list for fibre broadband. It means that all ports on the cabinet are in use and until either capacity is increased (if there are spare card slots that can be populated) or a customer ceases their line fibre broadband is unavailable. Your line shows as available on the checker as you already have fibre broadband.
There is no 'Waiting list' by the way, it is a question of first come first served. Keep checking and place an order as soon as it says available and dive in.
