First you will need to download ES File Explorer from the Google Play store
Once you have installed the app, navigate to create a new connection.
Change the connection type to samba(LAN) and then enter the path as provided by Simplifying IT to you
Enter your username and password that has been provided by Simplifying IT (if you are a Remote Server user this is the same username and password that you will use to log into the remote server)
If you have entered all of the information correctly, you should see all of your files and folders now.
When you re-open the app now, tap the down arrow then tap the Network icon.
Tap the down arrow and you should see the server(s) you are connected to. Tap the server and you will be prompted to log in again.