Looking at latest “goal post move” I kind of understand their prediction.  Daily Covid cases  in Argentina are still  high thou improved and seems getting smaller. Still , US is way ahead of rest of the world (Except Israel I think) in vaccination and reduced daily cases.

Argentina: WHO Coronavirus Disease (COVID-19) Dashboard | WHO Coronavirus Disease (COVID-19) Dashboard

 So having approximately 200 people working on site versa 900 pre-Covid guess makes a difference.

 Our hope is as Covid numbers in Argentina will get better then company  be able to bring more people .