DropBox eligibility for COS

Hi, to give the background, I came to US on L1B (my wife on L2) and lastbyear we got our VISA converted to H1B and H4 in US only (Change of status).

My wife traveled to India but is stuck there as consulate are all closed due to Covid and I am currently in US right now.

Are we eligible for dropbox , considering our old VISA was L1/L2 ? But it was converted to H1/H4 last year.

If I do not travel, will she alone can get the stamping done through drop box, considering there is no change in employer or role ?

You need to have Visa in same category. Meaning, if you want to get H4, you need to have H4 in your passport. As your visas have changed, it may not work.