On mobile, how do I add a main folder in Shared Files, expand a folder, or rename or delete one?

1. Add a main folder: tap the dashed "Add Main Folder" button at the top center of the page, enter a folder name, and confirm. 2. Browse contents: tap the "›" expand arrow on the left of a folder row to see its subfolders and files. 3. Rename or delete: tap the "⋮" (more options) on the right of the folder row, then choose what you need from the action menu (for example, rename, delete, or manage). 4. If you run into problems, tap the pink round support icon in the bottom-right corner to contact customer support.