today I thought I could finish my job much earlier. however my pc got the problem. when I back up files it deleted from the source. it supposed to backup not delete. I tested before use but I am not sure what was happened. checked the setting but all correct. so I restored from another backup. another problem is the installation of the software. the new version couldn't activate. Asked to the support and deleted one file from the installed directory and worked. looks like a bug of the software.