Unable to add DKIM

Unable to add DKIM

I've been trying to add DKIM, but so far have been unable to get it working. I get the message:

We are unable to get TXT record for DKIM right now. If you have added the TXT record just now, please wait for 30-45 mins for the changes to propagate and try again.

Can you check if my configuration is right and that I just need to wait more time for it to propagate?