If the unlock button reads Check again instead of a price, your device is not allowed to make purchases. On iPad and iPhone this is almost always a Screen Time restriction. Allow in-app purchases, come back to MixSurface and tap Check again.
- On the iPad or iPhone, open Settings → Screen Time → Content & Privacy Restrictions.
- Open iTunes & App Store Purchases and set In-app Purchases to Allow.
- Back in MixSurface, open the unlock screen: tap a locked tab, or tap ⋮ (More) → Settings → Purchase → Unlock MixSurface.
- Tap Check again. When purchases are allowed, the button shows the price. Tap it and complete the store’s purchase sheet.
- Bought it before, on another device or before a reinstall? Tap Restore Purchases instead.
The unlock is a one-time purchase, not a subscription. The mixer, layers and Sends on Fader stay free without it.
Why this happens
- Screen Time blocks purchases. It is easy to forget a restriction set for a child or for a shared device. MixSurface shows the notice “Purchases are turned off on this device” when this is the cause.
- The device is managed. An iPad from an employer or a school often has purchases blocked by its management profile. Ask whoever manages it.
- Restore finds nothing. The purchase belongs to the store account it was bought with. Sign in with that account and tap Restore Purchases again.
- Anything you already own stays unlocked, whatever the store says at the moment.