Why I don't have a new LES on my MyPay?

There could be many, many reasons and we can't narrow it down without a lot more contextual information. My guess is that the DJMS showed you as ETSed or that it shows you as not belonging to your current post.
Either way, it's a simple fix, but you won't get paid for a while so address your pay issues with your leadership and head over for an AER loan.

You may need to update your delivery options, but that shouldn't cause you getting no pay. I got emails from DFAS regarding delivery options and 1099R. Hope this helps.

Email content.
"Your current account settings have some of your documents delivered electronically and others sent via mail. While these may reflect your true intentions, we urge you to review your selections to ensure you know how we will provide your vital information.

An informal survey of some myPay users reveals that many are unaware of their document delivery selections, like yourself, have some set for hardcopy mail and others for electronic delivery via their myPay accounts.

More and more retirees are finding the convenience and security of receiving tax and pay statements, as well as important correspondence via myPay, a better option than having them sent via mail. Not only are they available immediately, they're there whenever the need arises.

Please don't delay. Changes to your 1099R delivery options will not be accepted after Nov. 16; and 1095 form delivery changes must be made on or before Dec. 31.

Thank you for your attention in this matter.

DFAS Customer Service"