How do I use Google Sign-In?Updated 2 months ago

Google Sign-In (also called "Continue with Google") lets you log into CENTR using your Google account credentials instead of creating a separate password. It's a fast, secure way to access your account across all devices.

No password to remember: Use your existing Google account credentials
One-tap login: Faster than typing email and password
Enhanced security: Leverages Google's security infrastructure
Automatic sync: If you're already signed into Google on your device, login is instant
Works everywhere: Available on iOS, Android, and Web

First Time Setup (Creating Account)

Open the CENTR app or go to centr.com
On the login/signup screen, tap or click "Continue with Google"
Select your Google account from the list (or add a new one)
Review permissions that CENTR is requesting (typically email and basic profile)
Tap "Continue" or "Allow" to authorize
Your CENTR account is created using your Google email
You're logged in automatically

Returning Users (Already Have Account)

Open the CENTR app or go to centr.com
On the login screen, tap or click "Continue with Google"
Select your Google account (if you have multiple)
You'll be logged in automatically - no additional steps needed

Platform Availability

Android

Native Google Sign-In experience
Seamlessly integrated if you're signed into Google on your Android device
Often just one tap - no typing required

iOS (iPhone/iPad)

Works on iOS devices too
Select your Google account or sign in with Google credentials
Same convenience and security benefits

Web (centr.com)

Click "Continue with Google" on centr.com/login
Sign in to Google in the popup window (if not already signed in)
Works in all major browsers (Chrome, Safari, Firefox, Edge)

Which Email Is Used for Your Account?

When you sign in with Google:

Your CENTR account is registered to your Google email address (the one you see when you select your account)
Example: [email protected]
All CENTR communications are sent to this email
This is the email you'd use if you ever need to reset your password or contact support

Do I Need a Password?

No! When you use Google Sign-In:

You don't need to create or remember a CENTR password
Your Google account is your authentication
Simply tap "Continue with Google" each time

Optional: You can add email/password login as a backup by contacting support at [email protected]. This lets you use either Google Sign-In OR email/password.

Switching Devices

Google Sign-In works across all your devices:

Same Google account: Use "Continue with Google" on any device where you're signed into your Google account
Different device types: Use Google Sign-In on Android, then also on iPhone or Web - it all connects to the same CENTR account
Multiple Google accounts: If you have several Gmail addresses, make sure to select the same one you originally used for CENTR

Security Features

Two-Factor Authentication (2FA)

If you have 2-step verification enabled on your Google account, it protects your CENTR account too
Google will prompt for verification code when signing in on new devices
Extra layer of security beyond just password

Google Account Security

Benefit from Google's advanced security monitoring
Google alerts you to suspicious login attempts
Password strength enforced by Google

Checking Which Apps Use Your Google Account

Go to myaccount.google.com
Click "Security" in the left menu
Scroll to "Third-party apps with account access"
Find CENTR in the list
You can see when you last used Google Sign-In and what permissions CENTR has

Revoking Access (If Needed)

If you want to remove CENTR's access to your Google account:

Go to myaccount.google.com → Security → Third-party apps with account access
Find CENTR
Click "Remove Access"
Note: This doesn't delete your CENTR account - it just means you'll need to use email/password to log in instead

Common Questions

Yes, contact support at [email protected] to link Google Sign-In to your existing email account. This lets you use either login method.

What if I have multiple Gmail addresses?

Make sure to select the same Gmail address you originally used to create your CENTR account. If you select a different Gmail address, it will create a new CENTR account.

Yes, you can switch to email/password login by contacting support. You can also add email/password as a backup option while keeping Google Sign-In available.

What if I change my Google email?

Contact CENTR support if you change your primary Gmail address. They can help update your account to use your new email.

No, it's completely free. It's a standard feature included with your Google account.

Can I use my work/school Google account?

Yes, you can use any Google account (personal Gmail, G Suite, Google Workspace, school account). However, personal Gmail is recommended because you'll always have access to it.

Troubleshooting

"Continue with Google" Button Not Working

Make sure you're signed into a Google account on your device
Update the CENTR app to the latest version
Try signing in on a different platform (web vs app)
Clear browser cache if using centr.com
Disable browser extensions that might block popups

Selected Wrong Google Account

If you accidentally selected the wrong Gmail address:

This created a new CENTR account with that email
Contact support at [email protected] with both email addresses
Support can merge the accounts or help you access the correct one

"Access Blocked" or Permission Error

Google may block sign-in attempts it considers suspicious
Try signing in from a trusted device first
Check your Google account for security alerts
Temporarily disable 2-step verification, sign into CENTR, then re-enable it

Can't Remember Which Gmail I Used

Check your email inboxes for messages from CENTR (receipts, welcome emails)
Try the "Continue with Google" button with each of your Gmail accounts
Contact support with all possible email addresses and they'll help identify your account

Privacy & Data

When you use Google Sign-In:

CENTR receives: Your email address and basic profile information (name)
CENTR does NOT receive: Your Google password, your Google activity, or access to other Google services
You can review and revoke permissions anytime at myaccount.google.com
Your Google account authentication is handled securely by Google

Linking to Existing Account

If you already have a CENTR account with email/password and want to add Google Sign-In:

Contact support at [email protected]
Provide your current CENTR email and your Gmail address
Support will link Google Sign-In to your account
After linking, you can use either email/password OR "Continue with Google"

Need Help?

If you're having trouble with Google Sign-In, contact support:

Email: [email protected]

Include:

Your Gmail address (the one you're trying to use for CENTR)
Whether you're trying to create a new account or access an existing one
What happens when you tap "Continue with Google"
Any error messages you see
Whether you have multiple Google accounts

We'll help you get set up and logged in!

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