We haven't detected the Google Analytics remarketing functionality on your website
In my AdWords account, I am getting the message "We haven't detected the Google Analytics remarketing functionality on your website".
I have had my remarketing lists checked and they are all set up correctly under Google Analytics.
Why am I seeing this message and how can it be fixed? It is my understanding that this just happens sometimes and can be ignored if remarketing lists have been setup in Google Analytics.
Searching for an answer has resulted in old and conflicting answers.
Thank you for your time.