In order to apply the commitment conditions to your campaigns you have to fill the field: Commitment on the media campaign.

...

If you have only one matching commitment for your Media Campaign the Commitment will automatically be linked (Version 2.91 and up) when you create the campaign. If this Campaign is an exception, you can remove the lookup manually, otherwise you don't have to do anything.

Automated Mapping

Here is how it works: The system looks up all active Commitments. If an Advertiser is set the same account must be linked in the Media Campaign. This is working in the same manner for Agencies. If the Media Campaign has a different Advertiser or different Agency as the Commitment - nothing happens. Using 4.16.3 Participating Accounts weakens this rule. As soon as you enter a Participating Account as Advertiser or Agency the system is trying to also match those to a Media Campaign which otherwise would not fit.

Multiple possible Commitments

...