Hello. I'm applying for Non-immigrant visa online but I'm facing some issues. For "Visa Type", if I pick "Non-immigrant Visa", then there is no option "retirement" in "visit purpose". But if I pick "LTR Visa" for "Visa type", then I can see "retirement" option in "visit purpose", but later I'm requested to provide BOI letter that should be irrelevant for Non immigrant visa. In a nutshell, I'm lost. Any tips guys ? Thank you