Unity Ads TestMode Problem

Unity version 2019.4.40f1
Ads package - Advertisement Legacy 4.4.1
In Services tab ads are ON and test mode is ENABLED.
In my ads script testmode boolean is TRUE.
My android phone is registered as test device.
And still serve live ads instead of test ads.

What could be the issue?

If someone came across this problem just restart your phone...

hi

Hi We are aware of this issue. Sometimes live ads are shown even if you configure test mode is enabled. We are working on fixing it. Sorry for any trouble.