How to get letsencrypt to work on Openshift site

Question

I hope someone can help me get my site set up with HTTPS correctly on Openshift. Here's the steps I took:

1. I have an Openshift site let's call it - myOSsite-myname.rhcloud.com

2. I have a domain name through GoDaddy -- mydomain.com.

3. I've set my domain on GoDaddy to forward to Openshift so now: www.mydomain.com --> myOSsite-myname.rhcloud.com

4. I set up two aliases on Openshift -- mydomain.com & www.mydomain.com

5. I went through some letsencrypt tutorials to manually generate a certificate. So now the call www.mydomain.com/well-known/acme-challenge/m2u0rNcFd4YnVHXqOWSFfh0G8kD2jtjAp8D8fC8Lwzg returns the required hash.

6. I uploaded the generated key files to Openshift on the alias www.mydomain.com

But now when I call www.mydomain.com all I get is the hash.

What did I do wrong?