Cooperatives are not supervised by the Central Bank, but for the INCOOP which is the Institute Nacional de Cooperativismo. Savers holding savings accounts in Paraguayan Coops ARE NOT protected by the Central Bank Fondo de Proteccion de Depositos which pays up to 10,000 USD to savers from broken bank institutions *per account.
In case you decide to put money into a Cooperative, I would strongly recommend you to do so ONLY in the bigger ones and most reputable institutions eg: Coomecipar, Universitaria, etc
There are plenty of opportunities with the Bolsa de Valores and Renta Fija documents, or even the Government debt. Look for safer and less risky assests whenever possible.
best,