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For Desktop / Laptop users
・Windows
　・Chrome (newest ver.)
　・FireFox (newest ver.)
・Mac
　・Safari (newest ver.)
　・Chrome (newest ver.)

For Smartphone users
　・Chrome (newest ver.)
　・Safari (newest ver.)

For our App users:
　・iOS 10.3 or later
　・Android 5.0 or later

*You may encounter problems even while using the recommended browser environment.
If you do encounter an error, please let us know via our 'Contact' form.
We at atta will do our best to improve our services and provide a pleasant booking experience.