Hibernation not working

Hello, Calvin.
Thank you for reaching us with your concerns. Do you mean you are able to put only one program out of 16 programs running in the background to sleep using AVG PC TuneUp?

Calvin, Please note that the AVG Android mobile support is provided through email only.
AVG Guru

Hello Calvin,

I understand the inconvenience that you are facing with Boost RAM feature of AVG Antivirus app in Android.
I request you to submit your concern to mobile team by following below mentioned steps to get further assistance:
Click on this link: https://support.avg.com/support_contact_form?l=&retUrl=support_sales .
Select the option as "YES" and the operating system as "ANDROID"
Fill in the details and click on the option "answer via email"
You will be getting the prompt answer via email from our mobile team.

When I use boost and the list of programs running is shown usually out of 16 only 1 will be hibernated. It never shows%boosted

Calvin, Please note that the AVG Android mobile support is provided through email only.
AVG Guru

from your website

What is the Boost RAM option?
Tap Boost RAM to kill any apps running in the background of your device. This action prevents your apps from slowing down your device and draining your battery. When complete, the amount of freed space and number of killed apps is displayed.

 this isn't happening ZTE Max Pro
 build no: Z981V1.0.0B21
hardware ver: u88A

I bought this software for this function and anti virus and 1/2 doesn't work and the other half is an Unknown