But you said he had an original passport that he had to change... you did not
need a passport to apply like now,
but if you had one then the information on the entry was supposed to match it. So again, name change, dates etc is not an excuse, he didn’t follow instructions. Anyway hopefully his change of passports doesn’t cause problems for him. Did he use his old passport before for anything?
here is dv2020 instructions for the same year he entered. Note page 3 “Name – last/family name, first name, middle name –
exactly as it appears on your passport”
https://travel.state.gov/content/da...Translations/DV-2020-Instructions-English.pdf