HI!

Have you set backup path(s) properly.
You can define two paths for backup. 

Note that the dot in path name makes folder whose name it precedes hidden.  And also subfolders after that, too.
To see folder with file manager you need to change file manager settings. Enable "hidden files and folders".

If you set path to filesystem root "/tmp" note that most linux systems will wipe /tmp contents on PS startup. That is not safe place to hold backups.

Define both paths to different locations and check does the backup appear to either one of them. End path string(s) to "/" like in picture.

If you have checked "compress backups with tar.gz" be sure that your linux has program "tar" installed. If you have installed it with Cqrlog it should be there,
but have you tested it also works?
Have you tested without compressing backup?

After you have answered to "make backup?" question YES do you see small "Exporting" progress window?
If you have small log it may appear only for a very short time.