Could you let us know what flippa asks you to set up with us to get the sales to work? We will be more than happy to guide you through the configurations. You can also email us at [email protected] for further assistance.
Your TXT record is entered correctly. Your main domain is forwarding as well. If you want www.healthyingredients.com to forward as well, you'd need to add in a matching www subdomain record. Please let us know if you need any help setting that up.
Actually, I don't know. You better wait until Dynadot responds or ask your question on Dnforum or Namepros. However, if you just made these DNS changes, might I advise that you wait 12 hours or so for the changes to propagate. In other words, you may have done everything correctly, but just need to wait a few hours for it to resolve.