Can't restore files backed up with Titanium backup

Hi there, I'm having trouble restoring my backed up files I backed up with Titanium backup, I backed them up on my external SD card and took it out before formatting my phone, I then installed Titanium backup again and re-inserted my SD card but it's not finding my files, when I search my SD card I can find a folder named Titanium backup and all my compressed files are there but I can't find them in the Titanium restore app, anyone know how I can restore my files?