DeNA has posted the below notice for Pokémon Masters regarding the outbreak of COVID-19:
Regarding Our Response to Your Inquires
Regarding Our Response to Your Inquires
Due to the outbreak of COVID-19, it may take us longer than usual to reply to your inquiries.
We regret any inconvenience caused and appreciate your patience and understanding.
Our help page is available, so please check the in-game FAQ or Game Hints sections if you have any questions or concerns.
We hope you continue to enjoy Pokémon Masters.
Source: Official Pokémon Masters site
Pokémon Blog 
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