I have a agent at blue port that will not hold your visa but will charge you more to put enough money into your account temporarily while they issue your visa. I would never let anyone keep my passport more than a few hours or over night! Your pass port is your everything
My dad did the OA visa and it was hell!!! It is so much easier and faster to do the O visa. , which is what my husband did also. With what you go through with the OA, I don’t know what the benefit is, but why anyone wouldn’t just do the O.