Unable to see folders I create and access windows explorer in documents

Hello,

 

I have admin rights to a SharePoint site (365) but I am unable to see document folders I create.  The icon for folder creation is grayed out.  I'm also unable to open windows explorer so I can transfer documents from on location to a SharePoint without losing hierarchy.  I've verified my rights are set up correctly, but surely there's a step I'm missing.  Can someone please provide some advice or next steps?  Thanks in advance!