Ok mi rispondo da solo perché ho risolto, potrebbe essere di aiuto a molti.
Praticamente pare che i Mac con M1 abbiano ancora problemi con alcune app tra cui Sky go, dice che hanno ricevuto molte segnalazioni,
Delete the Sky Go app. Launch Finder, select Downloads then delete ‘SkyGoInstaller’. Launch Finder again, select Go (at the top of the screen), then Computer. Select Macintosh HD. Go to Users > [yourusername] > Applications then delete the Sky Go app. Then go to Library by Open Finder. Click "Go" on the menu bar. Press and hold the “option/alt” key. Click the "Library" shortcut which appears. Then navigate to the relevant folders (Application Support, Caches or Preference) and delete all SkyGo folders and files referencing Cisco player Reboot your Mac and then download and install the Sky Go app again.