App use issues

Why can't my phone receive App push, incoming call, device alarm and door bell ring?

What should I do if the prompt "This account temporarily does not support family mode" appears when adding a family member?

Is the App compatible with HarmonyOS? Which versions does it support?

What's the Differences among Home member, Administrator and Home Owner?

How many administrators can I set in one Home?

Can I use the App to manage a smart device that I bought from another platform?

How to change the order of device?

I don't want to use the cloud storage service anymore, how do I cancel it? What hAppens to the video in cloud storage after cancellation?

What should I do when the time zone of my device is incorrect?

If forget the password and account, how do I change my App account（Bound mobile phone and Email） and password?