Question

what's the solution due to the cold the coconut oil in the water has frozen we have to put it out

Answer 1

Any oil looking transparent or translucent (semi-transparent) facilitating see through condition under normal conditions in summer or warm climate transforms to white solid or gel like form in winter, especially in very cool climate/regions. This situation is similar to transparent water under normal temperature transforming to white or bluish white ice block upon freezing with the difference of oils having much higher freezing temperature than does water at 0°C.