DKIM needs to be updated
I am still having issues with my emails bouncing back. I contacted Cloudfare to see if they could help. They had me run a Spam Test: I scored only a 4.5/10 and it shows my DKIM is not valid. This was their reply based on my results:
"From the test I can also see that your mail is DKIM signed. You have a CNAME record for the DKIM selector, but the target of the CNAME does not publish any txt records, so the verification fails. You should ask your mail provider for the correct DKIM value to fix this."