Paragon 17 Free version Newbie - problems restoring a backup

Hi

Due to a system problem I needed to backup my hard drive and restore the files to the same hard drive having installed a newer version of Windows. My original was Win7 and new one is Win10. So far as i can tell the backup went okay but now when I open Paragon on my PC with Windows 10 I only see an option to do another backup? I can't see any restore feature. My backup is on an external USB drive. Can someone step me through the procedure for restoring the backup?