Openshift deploy error

I'm having trouble deploying in OpenShift. First of all, I know how to deploy, already looked at the documentation and videos explaining. The error is that after I deploy I do not have access to any web page of my project. I tried using the Tomcat and Widfly server, tried with a web app developed in the spring and even a web service rest, the applications work locally. I feel that something is missing in my project, because I tested with the project of a programmer that explains how to do deploy in the Openshift in YouTube and everything went well.