My note 8 may have been sent to me black listed. How do I fix this

Can’t get it to work on a network. Was sold refurbished fully unlocked

It’s show as blacklisted on the IMEI check sites?

ex:
https://swappa.com/esn

Hi there. Sorry for the problems. Did you change the APN settings to your carrier? You might check with your carrier.

If no luck, reach out to Woot Customer Service. From a browser, use the Woot Customer Service form. In the Woot App, choose Account from the bottom navigation and then Support.