I think I know what is going on now, I guess it is related to the other thread. You applied the puppet modules to your sever and are running the foreman_scap_client on your server am I correct?
If that is the case, you need to apply the modules to your clients, run puppet on them and then run foreman_scap_client from your clients.
You had previously problems assigning the puppet classes to your host, because they did not show in the selection. From the screenshots I see you have the classes in production puppet environment. You need to go to Hosts -> All Hosts -> Edit. In the Host tab, choose the production puppet environment, then the classes should show in Puppet Classes tab, assign them.
Next you need to ‘run puppet agent -t’ on your registered client, which should create the config with appropriate entries.
Hope this helps,
O.