Before the launch, the drone ship was in ocean surface conditions that made the barge landing infeasible, and so the landing platform attempt was called off and the rocket made an over-water soft landing instead.
The drone ship was in ocean surface conditions. This was before the launch. These ocean surface conditions made the barge landing infeasible. The landing platform attempt was called off. This was before the launch. The rocket made an over-water soft landing instead. This was before the launch.