Real time map is not showing the data, it’s just showing as Loading data. This issue is only with http link. With https link , we are able to view the data.
You can see the exact reason in the last screenshot. You have an ACAO header with https, so http is not possible.
But why would you use http in the first place, if you have a working https installation? There is no reason to fix anything here, just force SSL for all access.
We have installed force SSL plugin, but it is not redirecting http requests to https. We still have the mentioned issue even after activating the plugin.