Yes it works very well when I use the ad id test. with my id i never received an ad.
Other thing I noticed that when we create an account on firebase, there is a moment when he asks us to test if the application is good to communicate with firebase (we just have to run application) but here I install and reinstall the application and they never detected that my application communicate with firebase ...
in my logs :
tentative chagement n° 418
tentative chagement n° 419
tentative chagement n° 420 7 Minutes
tentative chagement n° 421
tentative chagement n° 422
tentative chagement n° 423
tentative chagement n° 424
tentative chagement n° 425
tentative chagement n° 426
tentative chagement n° 427
tentative chagement n° 428
because i make this loop :
Sub Button1_Click
Dim a As Int = 0
Dim b As Int = 0
Dim c As Int
Dim phrase As String
Do While a=0
If IAd.Ready Then
Log("Pub prete à être affiché !!!!!!")
a = 1
IAd.Show
Else
c = b / 60
If c= b/60 Then
phrase = " " & c & " Minutes"
Else
phrase = ""
End If
Log("tentative chagement n° " & b & phrase)
IAd.LoadAd
b = b + 1
Sleep(1000)
End If
Loop
End Sub