Make sure you disconnect your ethernet cable from the ethernet USB adapter when playing Animal Crossing

Assuming, you block the Switch from accessing the internet. You’ll see a black screen for a long time. I don’t know how long, I got impatient, and closed the game, unplugged ethernet, and tried again. It’s only blocking the MAC Address for the USB adapter, the WiFi on it doesn’t support my AP security, it doesn’t do enterprise WPA. Or maybe they added it in a new firmware update, I’ll never know, ethernet is better.

But, I don’t need network access on it anyways.