It is a tough get to begin with.
BUT part of the problem is looking for an ADR for 1. The system at 'Ohana HATES solo guests - and from what I understand is not a fan of odd-numbered parties. Try searching for 2. As long as you show up, no charge for the "ghost". They are aware this is a system glitch - apparently predominately for 'Ohana as other family-style places will take 1.
EXACTLY what the problem was! When I searched for a table for two, plenty of times came up! As soon as I looked for 1 again, there were no times available! Thanks for the tip! This will be VERY useful for any future reservations I make!