Customer does not want Comment required

I went to Manage Custom Field and could not make the Comment field NOT required for thegyfl.com/football.
You can use temp/temp as user to edit the web site.

Also when making a payment I get an error - Invalid verification code entered
but there is no Verification Code field on the Manage Custom Field screen.

Hi,
1. If you want one custom field isn't required, beside changed Required status of field: Required to No, you also need to empty field: Validation rules of Custom field too.
2. The error "Invalid verification code entered" related to Captcha on Donation form. Please try to turn off Configure option: Enable Captcha in Joom Donation Configuration page and tet the donation feature again.
Good luck
Dam