If you are already registered with a Tanimachi (Premium Member) account, you can sign in to Google Play with the same Google Account and install the app to continue your membership.
If you change the device to different device of the OS , you can not take over Tanimachi membership that was registered in the previous device.
Please register again after you unregister your Tanimachi membership that was registered in the previous device.
Please note that if you have not unregistered the Tanimachi membership, the monthly charges to your ID(Google Account/Apple ID) will continue.