iPhone iOS 14 and earlier

  1. Open Settings and tap General
  1. Tap Profiles & Device Management / Device Managenent / Profiles
  1. Tap Piceasoft OY
  1. Tap Trust 'Piceasoft OY'
  1. Accept confirmation dialog by tapping Trust button
  1. Return to home screen. Find PiceaOne app and launch it by tapping the icon.