ILR (LR)- filling application form. help needed

Hi All, I am filling form for ILR (LR) and need your assistance please.
As I have booked premium service and paid the fee (£2999) online, now i know i hace to leave the payment section empty but in the form:
A1: If no fee is ticked we cannot take payment and your application will be rejected as Invalid.

Now, do I tick this or leave it empty as well ???

Leave it empty as you already paid the required fee, but you would need to submit the proof of fee paid at your appointment. BTW when is you appointment?