Manifest-File of an Android apk stores some settings that don't work with real device live testing. In this case the setting FLAG_SECURE is stored in the manifest. This flag prevent the ability to take screenshots of the system. On Android 9+ it also prevent to capture the screen what is absolute nessesary for the Live TEsting Feature of SauceLabs. It would be nice the edit the manifest file of a apk to change this and other settings bevor installing the app on the device.