I didn't receive a Login Bonus.
Login bonuses are granted when you log in to the game and the home screen is opened.
Also, login bonuses are reset at 5:00 am (JST).
If you have left the app running past 5 am (JST), you can try the following to retrieve your login bonus.
・Restart the app
・Open the home screen
You can also check the details login bonuses in the following location.
Home screen > Menu > Login Bonus