The .htaccess is hidden file. click on reset all interface settings at the bottom of the cpanel then open the filemanger and click on tickmark show hidden files and folders.
If you are using ftp client like filezilla there is option in server menu "force showing hidden files"
Now that you have found your .htaccess file and the purpose of this ticket has been fulfilled, I am going to close it to mark it as resolved. Feel free to create a new support ticket if you need more help or have any additional questions.