We are not detecting any bid from AppNexus that’s more than $0 CPM.
Step 1: Open the relevant configuration/s
Step 2: Audit your bidder parameters to make sure they’re correct.
Step 3: Try switching to a different IP using a VPN to rule out a demand issue in certain geographical locations. Run PubGuru Ad Inspector and see if you see a similar result/warning.
Step 4: Clear your cache and re-test with random pages.
Step 5: Reach out to your Appnexus representative to make sure your domain is whitelisted.