Buying Liga Pro Ecuador Serie A tickets directly from the club can be an uphill battle without a season-ticket or a membership. In addition, Manta F.C. membership does not guarantee you a ticket and, when you are successful, you'll be limited to one Manta F.C. ticket per membership. That means for buying two tickets, you'll need two Manta F.C. membership cards.
This problem disappears with SeatPick at your service - here you can buy Manta F.C. tickets as a non-member with no issue. Attend any match you want without the need for a membership when you purchase your Manta F.C. tickets via SeatPick.