Hi there @Holi Edition,
I would recommend looking up the txt record on MxToolBox, to see if it has or hasn't been published. You should see that your CNAME is returned if everything is properly set up. I would try to update the CNAME record that is missing, and then retry the verification of the Domain, and apply if successful. Please let me know when you are able to update and double check the records and if you are still encountering difficulties after this. Additionally, I would reach out to your IT/developers to assist with these steps.
Check out the following resource for more guidance.
All the best,
Alex