The membership form https://www.colongwilderness.org.au/join-donate-membership has the option to select a membership or 'none' and make a donation.
If just a donation is chosen then the form submits and says that the payment was successful but no payment is recorded either with the gateway or with CiviCRM.
This is what the form looks like
If you choose
- Membership - none -
- Additional Donation $5
The submitted form says that the payment has been submitted to eway, but there is no record with eway or record of the contribution.
The Contribution p9age does not have 'membership required'.
The price set doesn't have anything as required. If the value to be submitted is $0 then the credit card form is not displayed correctly.
This is what the price set looks like
CiviCRM 4.7.22.