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I have had Nomorobo installed since September. It is still not working. I have spent hours on the phone with Cox. After two months they discovered I didn’t have the upgraded service that is required. They installed it. It’s still not working. They won’t do anything more. They say I need to talk with Nomorobo. Nomorobo say they have contacted Cox about it. In the meantime, I am getting Robo calls but I refuse to spend one more minute on the phone with Cox. It is exhausting and discouraging.
Could you show some screenshots of how you have things configured? Do you have Sim. Ring set up to the NoMoRobo number?