Dropbox eligibility if visa expired more than 48 months ago

My H1B visa expired in September’2019. I tried to book my visa appointment on CGI Federal website for December’2023 which makes my visa expired older than 48 months ago.

September’2019 - December’2023 => 51 months

But it still says that I’m eligible for dropbox. Is this correct?

I replied to your post on another forum
You just need a prior US visa approval in any class to be eligible for IW however it is at discretion of the consular officer.