Each time you have an amount due, you can simply check in the app when the cut off date is for payment. You are given 7 calendar days to pay.
If you still have not paid, you can only see and claim "Admin tip" jobs. The GoGet admin tips will be contra-ed instantly with the overdue amount in your statement. If the statement drops below RM10 admin tips, you don't need to pay GoGet, and you can claim any job as normal (any "Poster tip" job or "Admin tip" job that you wish).