How to add custom link for sharing whitelabeled chatbot?

I am trying to share the white-labeled chatbot to a client through link. but in the link, it shows answer. When I add the NDS record and try to add it, I keep getting the error.

below is the DNS details for the domain in question

can you please share the solution? I want to share the link of chatbot without any mentioning of answerly.

Hi, i have just sent you via email the configuration, looks like your custom domain requires a txt verification from our CDN provider.