Atlanta total requests absentee ballots, 1,609,702, Total absentee ballots accepted 541,396 What’s going on?

Acording to the video 1 462,708 Mail-in ballots were expected to be received.
Secretary of State Brad Raffensperger reports total requests for absentee ballots to date: 1,609,702
Total absentee ballots accepted by counties to date: 541.396

What’s going on?

https://sos.ga.gov/index.php/elections/secretary_of_state_reports_record_breaking_turnout

>https://youtu.be/sKiVEBe0bCc
November 2