I've been searching for a solution for that issue since my last post.
I've even reinstalled my entire windows system clean install all over once again to make sure things are clear.
I've reinstalled TeraCopy 3.12, and disappointed that problem still exists.
Just opened the option of any copy job and you will find these settings:
I just by accident clicked on reset to default and restated the software, and it is working once again.
I do not know what happened but glad that it is working now, and thought to share it in case anyone has the same issue.