Hi @Abigail-and-Marion0,
I'm terribly sorry for this late response, and I hope you and your loved ones are safe.
Did you manage to find a solution regarding your credits in the end? If you need more help, I suggest you contact the customer support team who will be best placed to look into what's happening for you: www.airbnb.com/help/contact-us/
Please let us know you're getting on 🙂
Emilie