This answered my question ( If you owned more than 1024 sqm for even a minute during the monthly billing cycle, you will be charged )
ty for the information
For how long time i will be charge if i have more than 1024 Sqm, as example if I have 512 sqm and i bought 1024 land at the same day i sold the 512 do i will still pay tier fee at the end of the month?