I log into my Adsense account, then create a new channel and "tick" "Show this channel to advertisers as an ad placement" option. Then I go to "Manage ads". I choose the ad unit which only appears on my homepage and put my brand new channel as the only one on "Your selected channels" section. Then I wait for some time (a few hours). Then I log into my ADWORDS account and try to start a new campaign just to check if I can select that placement I had created for my "publisher" website. Although I see many sites with placement options available, I can't see mine. What am I doing wrong? Or does it take a lot of time for the adwords system to catch up with my changes from the publisher side? Thank you in advance.