Pokémon Masters, the latest strategy and battling Pokémon game for mobile platforms, is now available for download on the App Store (iOS) and Google Play (Android). In celebration of the game’s release, special in-game events and rewards are offered for a limited time.
Regarding Sync Orb Chance
Each time you win a battle, the odds of a sync orb chance occurring increases.
After you obtain sync orbs, the odds will return to their initial state, and will then increase at a lower rate.
The circumstances detailed above will reset after the date has changed.
For more information, see the Sync Grid section of Game Hints.
We hope you continue to enjoy Pokémon Masters.
Source: Official Pokémon Masters website