If you are logged out of your account, you will see Guest after tapping on Menu (☰).
To log in again, follow these steps:
Tap Menu (☰)
Tap on Sign Up
Enter the email you used to sign up
You'll receive a 4-digit code to that same email, which you'll have to enter when prompted. If you don't receive the 4-digit code, please check other folders in your inbox such as 'Spam', 'Promotions', 'Ads' etc.
Have more questions? Let us know via email@example.com