XF 1.5 put adsense code after 1st post on each page

[Sc0rps]

Hello dear,

i need help to insere adsense code after 1st post message in each page .

someone can help me to do it and put like an adsense avatar with the code after every first post message page

exemple : here :
https://image.noelshack.com/fichiers/2017/24/6/1497719620-capture-d-ecran-2017-06-17-a-19-12-07.png

i tried but not arrive to do anything

thank you

 

[Sc0rps]

fixed it , i did it on codes , not with the add

thank you bros

 

[Sc0rps]

I need help bros ... i don't understand why i have it double ...

http://prntscr.com/fl8gk4

i want help to delete the top one ...

here is the page : https://virtual-gaming.fr/threads/presentation-fuhin.915/

thanks alot