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Support

How can we help?

Find a quick answer below, browse the step-by-step guides, or write to us. A person on our team reads every message and replies as soon as we can.

Email support@c3ntr.app Browse the help docs

Quick answers

The questions we hear most often from members and school leaders.

I can't sign in

C3NTR signs you in with your phone number and a code sent by text. There is no password to remember.

  1. Check that you entered your number with the country code, for example +44 for the UK.
  2. Wait a minute for the six-digit code to arrive, then ask for a new one if it has not.
  3. If you linked an email to your account, you can sign in with that email instead.

School leaders and teachers sign in to the web portal with the email linked to their profile. If you are still stuck, write to support@c3ntr.app with the name of your school and we will help you get back in.

My school invited me

Welcome. Download C3NTR and sign in with the phone number your school used for the invite. If your number is on the school's invite list, you join straight away.

If your school gave you a school code instead, choose Joining a school after you sign in and enter the code. The guide Joining a school walks through each step.

I'm waiting for approval

When you join with a school code, a school leader reviews your request. You will see a "You're in the queue" screen until they approve you, and you get a notification when they do. Approval is up to your school, so check with your school leader or instructor if it is taking a while.

I have a new phone number

Sign in with your old number if you still can, then open Edit Profile and tap Change phone number. You confirm the new number with a code. See Your profile. If you no longer have the old number, sign in with your linked email, or write to us.

I can't see some articles

Your school decides who sees what. Some articles open up only at a certain grade, and drafts stay hidden until they are published. If you think something is missing, ask your teacher. See Common questions for how grades work.

Delete my account

Open Edit Profile, scroll to the bottom and tap Delete account. This removes your profile, favourites, memberships and uploaded files, and it cannot be undone. A school leader who wants the whole school deleted can write to support@c3ntr.app. See Your profile.

Guides for your role

Students and members

Joining your school and getting the most from the app.

School leaders and teachers

Setting up your school, writing content and managing members.

Browse the help docs

Step-by-step guides for every part of C3NTR, grouped by topic.

Getting started Join a school, create your own, run the setup wizard and write your first article. Reading Browse, search, save favourites, follow events and read offline. Writing The editor, formatting, images, video and audio, imports, templates and AI drafting. Managing your school Members, roles and grades, branding, announcements, locations, attendance and billing. Your account Your profile, phone number, notifications and storage on your device. FAQs Questions schools ask before they start, from set-up time to data protection.

Contact and reporting

Tell us your school's name and what you were doing when the question came up. It helps us give a useful answer first time.

Contact us Send feedback from inside the app, or email support@c3ntr.app. Report content Report something on C3NTR that should not be there, or send an intellectual property notice. Safeguarding How C3NTR keeps children safe, and how to raise a concern. Accessibility What the app supports today, what we are improving, and how to report a barrier. Privacy and your data How we use personal data. For data requests, write to info@c3ntr.app. Legal documents Terms, policies, the data processing agreement and the trust centre.