admob appID help, where can i find it?

Hello again.

i opened an account with admob and added  my app to the account so i can display ads on it.

i saw i need to put my appID provided by admob, into my lua code. when i go into my ap details in admob, i can’t find any appID (should be 15 numbers+letters?) all i see is the unit-identifier which is a name i choose 

and a long number that is my publisher id - 16 numbers only in length.

does anyone knows where can i find my appID?

thanks.