What Is DBM in PPC?

DBM stands for Double Click Bid Manager is a demand-side platform DSP for google. You can buy display media ads using programmatic strategy through DBM.

Double Click Bid Manager is nothing but a Google Demand Side Platform that allows the advertisers to create programmatic display campaigns and set the bids and the targets. with the help of reporting features in Double Click Bid Manager, the advertisers can also report the efficiency of campaigns and also gain insights to their audiences to use in their PPC efforts.

I'm wondering if anyone with buyer access to DBM could tell me if there are any alerts on my domain (or anything!) that would explain what happened. It's been going on for a long time now, and I'm going crazy trying to figure out what happened.