@alpinemartin. Let me see if I can help you out from what you explain.
1. ok. From the description of your first problem, you may need to check to see of the loadposition plugin is enabled. Go to the Plugin Manager and look for “Content – Load Modules” plugin. Make sure it is enabled.
2. Don’t quite understand what your second problem is. I suspect that my first answer will solve this problem too.
3. Yes. The module only displays top level files in a folder. It does not display sub-folders or their contents. If you want that functionality, you have to get the Easy Folder Listing Pro plugin.
Hope this helps.