When you create a mediation group, the AdMob Network is automatically added as a bidding ad source. To use other bidding ad sources, the AdMob Network must be one of your bidding ad sources.
To convert the AdMob Network to a waterfall ad source:
- Sign in to your AdMob account at https://admob.google.com.
- Click Mediation in the sidebar.
- Click the name of the mediation group that you want to change.
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To convert the AdMob Network to a waterfall ad source, you must first remove your other bidding sources.
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Click and select Move to waterfall ad sources.
To convert the AdMob Network back to a bidding ad source, click and select Move to bidding ad sources.