New lessons unlock every day!
After your child has completed a lesson, a new lesson will unlock at midnight.
This can happen, but don't worry. All it means is that the progress on the device you used to play the latest lesson hasn't been sent to the Lingumi servers yet. So, to make sure the latest lesson progress is on the servers, do the following:
On the device with the most progress / the latest progress, go to 'Settings' →'Sync'
If using two devices to play Lingumi, on the other device... do exactly the same thing! 😎
That should work. If it doesn't, you can write to us on [email protected] and we'll check out our system and investigate what's gone wrong in your account.