In order to receive a payout, you must complete the PA Payout Method section first before you are able to access the Withdrawal Request page. You cannot request a withdrawal if you have not entered details of where the withdrawal is to be sent to.
During the dates listed above, you will see a section available for submission: PA Request Form in your back office members area, on the top tab options. Be sure you have hit your minimum balance and minimum trading days before requesting a payment.
For your first payout, you must have a total of 10 (ten) separate, individual, trading days, where trades were actual placed on those ten days, according to the PA guidelines, before you can request the first payout.
Subsequent payout requests also require the same minimum of 10 (ten) trading days between payout requests, where trades were actually traded on ten individual, separate trading days. The 10 (ten) active trading days are from request to request. It is not based on request approval dates, when the funds were deducted from the trading account, or when payouts were sent or received.
So, there must be 10 (ten) separate qualified trading days between any withdrawal requests, whether the previous request was approved or denied.
Their system does not count a trading day to be complete until the evening processing and the start of the 11th day. If today is your 10th trading day, you will not be able to submit a withdrawal request until the close and update of that 10th day, which is after 6 PM ET. Since there are two pay periods per month and a 5-day window for each period, this should cover all scenarios.
This system is automated and they are not able to make exceptions. Any deadlines that are missed will fall into the next payout request period. You can submit the withdrawal request at that time.
Payout approvals requires compliance with the PA Contract Agreement and the Consistency Rules. You can find these listed in the agreement, on the Apex Trader Funding website, and in the FAQ section on their site at atf.com.

