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During the period of March 25 through April 1, 2020, despite the free version being downloadable at no charge, a price had been set for it.
If you downloaded the app during this period, please request a refund from Apple. We apologize for the inconvenience.

To request a refund from Apple: Apple top page ( https://www.apple.com/ ) -> Support -> AppStore -> Purchases and refunds -> Request a refund

* After the refund has been made, please download the free version of the app again.
* Upgrade version is available via in -app purchase.

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