Hi! I understand that the "Log In" button in your Sakura app on your iPhone (iOS 26_3_0) is not working. Let's see how we can get you logged in smoothly.

To start, could you tell me if the button appears but nothing happens when you tap it? Or does it seem unresponsive or greyed out? Also, have you tried restarting the app or your phone yet?

In the meantime, here’s a simple step-by-step you can follow:

1. Restart the Sakura app: Swipe up from the bottom (or double-press the home button, depending on your iPhone model) to open the app switcher, then swipe the Sakura app off the screen to close it. Open it again and try tapping "Log In."

2. Check for app updates: Make sure your Sakura app is updated in the App Store. Sometimes, older versions can have bugs causing buttons not to respond.

3. Restart your iPhone: A fresh reboot can clear up minor glitches.

4. Network connection: Ensure you have a stable internet connection, either Wi-Fi or cellular.

5. Reinstall the app: If the problem persists, try deleting the app and reinstalling it from the App Store.

If you have already tried these or if the button is visible but doesn’t respond only when entering a specific email or password, please let me know. There might be a known issue with how the login form handles certain inputs, or a problem with permissions.

Also, some users mentioned issues related to the login in Sakura where the button doesn’t work unless the correct, full password is entered without errors. So double-check your password format and keyboard layout.

Let me know how these steps go or if you need help with any step! Are you satisfied with this initial guidance?