Anti-theft protection don't work

Hello Maria,

We are sorry for the inconvenience caused.
We request you to submit your query to our mobile team.
Please 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"
Once your request is submitted you will be getting the prompt answer via email from our mobile team.

I tried to check how Anti-theft protection of my cell is working on my laptop. But in my browser I could check only locate - another functions "shout", "lock" didn't work.
Tell me why it happend, please?

Maria, Please note that this Community deals mainly with the technical queries regarding AVG Windows products. AVG Android support is provided through email only.
AVG Guru

Hello Maria,

We are sorry for the inconvenience caused.
We request you to submit your query to our mobile team.
Please 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"
Once your request is submitted you will be getting the prompt answer via email from our mobile team.