@AbBowhunter He clearly states the android box. The apple app they're well aware of the issue and working to correct it. They have just recently changed the entire back end and moved off flash so there will be some issue to work on.
This may be related to an issue with the cache and data on the Pik box hard drive not being cleared periodically, resulting in an 'insufficient storage' error message that is blocking the Pik TV app upgrade. You may need to clear your Pik TV app data to clear space. You can do this from the Android TV home screen --> Settings --> Apps --> Pik TV --> clear data. After this you can re-try the app update from the Google Play Store. If successful, you may need to log back in to the Pik TV app.