In order for the Placement ID’s to work with Size Mapping, you’ll need to configure multi-sized Placement IDs according to Size Map.
Step 1: Open the relevant PubGuru header bidding configuration
Step 2: Make sure the sizes configured matches the sizes in the Size Map
For example, AdUnit1 has 3 Size Maps:
The bidder size parameter should match at least one of the sizes in Size Mapping:
Step 3: If an ad unit will run only on a specific device, still add other devices’ minWidths, but don’t add sizes to it.
A mobile unit will have the following size mapping setup:
A desktop/tablet unit will have the following size mapping setup: