Activate your account, and check all of the data in PRD for accuracy. Keep doing that every couple of months until you complete probation at your career destination airline.
I like PRD better than PRIA for sure, since you can see all the info live and know exactly what employers will see.
Worth noting... while PRIA is now superseded by PRD, not everyone seems to have gotten the word... there are still reports of airlines sending the old PRIA forms to past employers, and some employers will still respond (bureaucratic inertia I guess).