I cannot use out-of-Home functionality anymore on my Android phone (OS 4.4 and lower)

Since August 2018, server security is improved, making it impossible for Android phones with operating system 4.4 or lower to connect to the cloud. This is because these operating systems don't support the latest security standards. If you still own an Android phone with operating system 4.4 or lower, use the local in-home mode to control your Daikin units.