How to link godaddy domain to openshift hosting?

Question

Godaddy

Good afternoon!
I registered a domain on GoDaddy, created a hosting on the OpenShift service
The task is to connect the domain to the hosting, I tried to follow this instruction
--on godaddy
Domains>All Domains>select your domain example.com>click DNS ZONE FILE tab
1. delete www CNAME
2. create new Record with
Record Type CNAME > HOST: www > POINT TO: myapp-mydomain.rhcloud.com
3. click Finish
Click Settings tab
1. Forwarding > click Manage
Forward to: www.example.com > Redirect: 301 (Permanent) > Type: Forward only
2. click ADD
--on Openshift
1. select Application tab > select application myapp-mydomain.rhcloud.com
> click change
2. enter Domain name www.example.com

When I go to study-code.com I get the error This website is temporarily unavailable, please try again later.