You may choose to pay premiums for your whole life DPI up to age 70 or age 85.
If you choose to pay premiums until age 70, you will need to pay higher premiums every year, but the total amount paid over the entire premium payment period will be lower.
If you choose to pay premiums until age 85, you will pay lower premiums every year, but the total amount paid over the entire premium payment period will be higher.
Consider if you can afford to pay the premiums until the age you have chosen, taking into account that you may not be earning any income after you retire.