Help as our admin died and we have nav 5

we have an older Nav 5 and it worked perfect, administraded by a guy who just died. So we need the system is used now in thailand.
Problem : after installing on win 1o the inventory list was changed suddenly and is not printing out some column fields. I just can (without lil nav knowledge) see wehn looking around all the field names i need. but they are not entered in the headlines of fields.
Who can help
thanks wolf. dressler