As you already know whitelisting has been removed from all native ad networks and it has become impossible to get a whiltelist campaign even if you're spending 4-5 figures a day.
To address this situation we at TheOptimizer have released a few updates that will enable you to get around these limits and create a Virtual Whitelist.
Here's a quick video guide on how to do it:
Enjoy it and let us know if you have any questions 