Hello, Tamers!
This is Dats Center.

To enhance security in Digimon Masters, please note that purchasing items from the Cash Shop will be restricted unless a specific quest has been completed.

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■ After the 25/3 update : You will be able to purchase Cash Shop items only after completing the Odaiba [Crisis in the Digital World] quest.

※ This restriction also applies to existing Tamers. If you have not cleared the quest, you will not be able to purchase Cash Shop items.
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If there is at least one character on your account that has completed the Odaiba [Crisis in the Digital World] quest, Cash Shop purchases will be available across all servers.
 
Thank you.