I'm trying to add https://translate.kagi.com/api/extension/rss to BazQux Reader (rss client)

When trying just to curl it:
curl https://translate.kagi.com/api/extension/rss
{"error":"Kagi Translate is down for maintenance and currently unavailable to free tier users. Kagi members can continue using it. Subscribe at kagi.com to keep access."}
The RSS feed will work without needing to log in to the service