Need Help About Custom Ad File, Applovin

My admob account has been limited, so i tried using mediation using applovin but there is a lot of issues
Like banner not displayed on andriod phones and non-rewarded videos on ios too
so, for now i will switch to anther ad network and i think applovin have good reputation
now i'm lookng at custom ad file and there are many method i don't understand it,
Can anyone help me to integrate applovin ads to my game ?
Thanks in advance.

 

or,
if anyone using applovin network,
Could you be generous and give me source code for custom ad file ?

 

anyone ?