How to create an App-Specific Password for iCloud 2-step accounts?

To successfully link your iCloud inbox containing a two-step verification to Slice you could create an app-specific password to your iCloud account.

To generate an app-specific password:

1. Go to https://appleid.apple.com and sign in
2. In the Security section, click "Edit"
3. Click Generate Password and follow the steps on your screen.
4. Re-open Slice and try linking your iCloud account with this password.