On both Mac and Windows we recommend using the free WebDAV client Cyberduck (cyberduck.ch) to connect to Files Pro.
Cyberduck is very simple to use and is often faster and more reliable than the Finder or Windows Explorer.
Cyberduck also supports Bonjour so it will automatically recognise Files Pro making connection very straightforward with no need to manually enter a URL. Note that Files Pro must be the active application on your device otherwise it won't be listed.