Thanks for the help .
Got it fixed thanks a ton to the help from the guys over at gameDNA , the issue was the following, go to:
Engine\Source\Runtime\Advertising\Android\AndroidAdvertising\AndroidAdvertising_APL.xml"
and change the following line in the file :
< insertValue value=“com.google.android.gms,play-services-ads,11.0.4” />
to :
< insertValue value=“com.google.android.gms,play-services-ads,11.6.2” />
and save it, this solved the problem for me.
ALL props for this fix goes to Patrick from GameDNA.
Hope this helps anyone else with this exact problem