Rewarded video ads on rewarded not working

when admob rewarded video ads are not getting trigered when rewarded block
The when rewarded block is not working properly.

Ok ok earlier i was a little crazy
But one thing your admob rewarded video ads are not working fine because when i call the ad on test mode if works perfectly but when i use my admob ad unit ads are not loading please help i have tried so many ad unit ids but later i came to know that problem is in your code.
Thank you for time
and the grammar classes