Ad labels – show customized label above adverts

https://adinserter.pro/documentation/additional-block-settings#ad-label

Inserted this code but didn’t work

<div style="font-size: 12px;">Advertisement</div>

The label “Advertisement” is not showing up

I don’t see any block with ad label enabled.

do I need to enable the ad label for each block manually?

How?

found!
Is it OK?

But it’s not showing up on a mobile device!

The code is inserted on all devices.
I see no issues.

Thanks! Solved!