How do I lift the device ban on my Snapchat?

You don't lift the device ban. Only Snapchat can lift it. We can't, you can't, and Apple can't.

Chances are that Snapchat won't. If you read the device ban section of Snapchat Support – I get an error message logging in to Snapchat, you'll see "If your device has been banned, Snapchat Support cannot unban it for you."

Too bad. There is nothing to do here. Contact SnapChat.