Tags only render in the part of BC there are part of. Web app tags only render in web app layouts.
If you choose a template for a web app item that will not understand those tags.
You need to put the tags and manage the web app layouts itself. You have list, list backup and detail view and can also create your own extra list layouts as well.
In terms of the module tag you listed there. That is not the correct module and why it wont be rendering. It is - {module_isloggedin}
For a web app list view you do not create a page for it, you use its large layout. You use the tags that link to that layout and then you create the html for that layout and add the tags in there.
Clik here to view.
