Complex sentence: Players only get one bid, except the person to the dealer's left who is able to bid twice, although, if someone Props without a Cop, they still have the option to upgrade to a Solo no matter where they sit.
Split into simpler sentences: Players only get one bid, except the person to the dealer's left who is able to bid twice. Although if someone Props without a Cop, they still have the option to upgrade to a Solo no matter where they sit.