Q: ipod wont login in

Place the iOS device in Recovery Mode

https://support.apple.com/en-us/HT201263

and then connect to your computer and restore via iTunes. The iPod will be erased.

If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled

https://support.apple.com/en-us/HT204306

If recovery mode does not work try DFU mode.

How to put iPod touch / iPhone into DFU mode « Karthik's scribblings

https://geekindisguise.wordpress.com/2009/07/16/how-to-put-ipod-touch-iphone-int o-dfu-mode/

For how to restore:

Use iTunes to restore your iPhone, iPad, or iPod to factory settings

https://support.apple.com/en-us/HT201252