The dates are wrong because depending on the time zone hours subtracted or added at the time of registration.
Check to_display_date methods and to_display_date_time the include / TimeDate.php file parameter called $ CONVERT_TZ , and defaults to true .
Then modify the file AOW_WorkFlow \ aow_utils.php
Adding false as a parameter on the line
// $ fieldlist [$ fieldname ] [’ value’ ] = $ timedate- > to_display_date ($ value ) ;
$ fieldlist [$ fieldname ] [’ value’ ] = $ timedate- > to_display_date ($ value , false); // custom kunan
This solved the error.