To get upload progress bar, you need perl support on your server.
With FTP client software, set permission for the file ubr_upload.pl to 755.
You need to edit the file are set path
Edit cgi-bin/ubr_upload.pl
Find
my $TEMP_DIR = '/home/username/public_html/templates_c/';
Replace it with path to templates_c folder.
In cpanel servers, it will be
/home/CPANEL-USER-NAME/public_html/templates_c/
In Plesk, it will be
/var/www/vhosts/youdomain.extn/httpdocs/templates_c/
Edit include/settings/upload.php
Find
$use_upload_progress_bar = 0;
Replace it with
$use_upload_progress_bar = 1;