Signing in just got easier for young readers.

• Learners now sign in with their username and a 4 digit PIN. No more passwords to remember or type.
• Set or change each learner's PIN from their profile in account mode.
• You can now change a learner's username. The old name is freed instantly and nobody gets signed out.
• A cleaner, calmer profile creation screen with live checklists.
• Clearer messages when a sign in does not work, plus many small fixes.

One thing to do after updating: set a PIN for each learner from their profile, then share it with them. Anyone already signed in stays signed in.