The 2019 International Challenge February Online Competition recently took place in Pokémon Ultra Sun and Pokémon Ultra Moon. The competition went from Friday, February 22, 2019, at 00:00 UTC, until Sunday, February 24, 2019, at 23:59 UTC. Trainers were limited to 15 battles per day, with unplayed battles carrying over to the next day. All qualified participants in the 2019 International Challenge February Online Competition will receive a Shiny Tapu Bulu, and the top players will receive Championship Points, which contribute toward earning an invitation to the 2019 Pokémon World Championships. Players must have completed at least three battles to qualify. However, due to several issues with the Pokémon Global Link, the 2019 International Challenge February results and Shiny Tapu Bulu distribution have been hit with a delay. You can rest assured that The Pokémon Company is working to resolve this as soon as possible, so stay tuned for any updates.
Source: Pokémon Global Link