These may be your internal ip addresses.
But your public ip addresses are 104.28.10.186 etc.
If you want to use Cloudflare, you must have a complete certificate before you activate Cloudflare.
So first deactivate Cloudflare, so the 37.... is your public ip address. Then create a correct certificate, then activate Cloudflare.
Or use the Cloudflare - integrated solution.
A few hours earlier I have updated the page
and added a link to the Cloudflare blog @schoen had shared.