If your account is currently a 'Veterans Account', you cannot access the DLE.
Until JPA provide your current service number I'm afraid the process cannot be expedited by the Service Desk.
In the interim, if you have a Dii/MODnet email address in the format ([email protected]/@mod.gov.uk) you can upgrade to a Dii/MODnet Account by going to My Settings > Upgrade Account > then selecting NO to the Service number and Yes to the valid DII/MODnet email address.
If you do not have either of the above, you will need to be sponsored at OF3/C2 level, they will need to log into the Defence Gateway and access the DLE, find "Support, Make the most of E-Learning" section on the front-page, then "User Accounts & Passwords" in the FAQs, "How to create Sponsored DLE user account" and complete the spreadsheet.
Please note your EGS Syops will need to be in date to allow the validation emails with the relevant links to be accessed