Domain DNS Network could not be retrieved

I am trying to set up a custom domain with github pages. I've added the github IP to my dns manager on GoDaddy as well as CNAME to my ___.github.io. I've also included a CNAME in my root directory with my custom domain name "firstlastname.ca" dns manager

Under github pages in Options, I am getting the following error: Domain's DNS record could not be retrieved enter image description here

Any ideas on what's going on and how I can try and figure out why this isn't working?

Thanks