Q: how to fix grey no wifi on touch

Tap Settings > General > Reset > Reset Network Settings then restart the iPod.

You should be prompted to re enter your Wi-Fi password in order to connect to your network.

DIM/GRAY

See:

iOS: Wi-Fi or Bluetooth settings grayed out or dim

One user reported that placing the iPod in the freezer fixed the problem.

Also heating sometimes works. See:

Why can't I select my wifi settings?

A trick that works frequently with iPhones:

Settings > AirPlane Mode ON, Do Not Disturb ON

Power down and wait 5-10 minutes

Power up

Settings > AirPlane Mode OFF, Do Not Disturb OFF

If not successful, an appointment at the Genius Bar of an Apple store is usually in order.

Apple Retail Store - Genius Bar

Thank you so much!! I got my wifi back! i've tried to reset n restart my iphone 6 plus but my wifi still grayed out. But after i follow your step, ican seitch on my wifi again    I'm so happy. Thank you!