<div class="tab-content-content">This is the smartphone app for Kappa Sushi. If you are experiencing issues such as the app not opening, crashing, unable to log in, or encountering membership information errors, please try the following steps. On Android, go to "Settings" > "Apps" > "Kappa Sushi" > "Storage" > "Clear Data". After that, restart the app and log in again.</div><div class="tab-content-content"></div><div class="tab-content-content">Whether you are a first-time user or a long-time customer, it is recommended to start by registering as a member. By becoming a member, you can access exclusive offers, make store reservations, order takeout, and use coupons.</div><div class="tab-content-content"></div><div class="tab-content-content">The app offers various features, including store search and reservation. You can easily make a waiting list reservation based on store information. You can also save your favorite stores for convenient access when making reservations. Additionally, the app allows you to make takeout reservations through the website. The "My Page" feature enables you to confirm your registered email address and make changes to your membership information. The app also provides coupons for discounts, which can be presented at the cash register. Stay updated with the latest information, campaigns, and special offers through push notifications.</div><div class="tab-content-content"></div><div class="tab-content-content">Please note that the text provided has been summarized and may not include all the details mentioned in the original text.</div>