Pair Networks has a couple problems when running GetSimple:
ZipArchive is not installed. Prior to 3.0, you would not be able to create website archive backups. With GS 3.1, you will have the ability to create tar.gz backups instead.
Directories are not writable by default. You will need to CHMOD the /data/ and /backups/ to 0777
Files created by the system (i.e. pages or backup files) are owned by a different owner. This doesn't cause a problem unless you want to delete/move files via FTP. To fix, their support will gladly help CHOWN the files for you if you ask.