In case a specific source reached the max bid you can:

  • Increase the core bid for the specific source in order to increase the maximum bid for this source and expand the range of bids. 
  • Create a new whitelist optimizer campaign with a designated budget for the specific source(s) (in that case the daily budget won’t be the barrier for buying more traffic). Use the action ‘Blacklist source from this campaign and start a separate campaign, whitelist this specific source.’
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