I have 5 app engines projects - all with different sub domains on Google App Engine. Every single one of them are just a CNAME record on Cloudflare posting to ghs.googlehosted.com.
There is nothing different about any of them but for some reason 1 out of 5 of them are failing to generate a SSL certificate. None of my other ones are having any issues.
Does anyone know why this would be happening? I know someone on here mentioned I could switch my DNS to a completely other registrar but that really isn't an option for me right now and I'd like to get to the bottom of this.
How my Domains are setup:
I have my domain.com verified. I also have sub-i-want.domain.com verified. And then I select that domain on the list and add the subdomain like so:
I should note that only subdomains are active on google cloud. My domain.com is on another server outside of google.

