Hi Ami,
Itry but with ACF7 and when active licence look what error says:
…and I deleted … sorry
Fatal error: Uncaught Error: Call to a member function diff() on bool in /home/domain/public_html/wp-content/plugins/time-tracker/inc/function-tt-utilities.php:277 Stack trace: #0 /home/domain/public_html/wp-content/plugins/time-tracker/inc/class-tt-task-list.php(70): Logically_Tech\Time_Tracker\Inc\catch_sql_errors('/home/domain...', 'get_open_tasks_...', 'SELECT tt_task....', '') #1 /home/domain/public_html/wp-content/plugins/time-tracker/inc/class-tt-task-list.php(35): Logically_Tech\Time_Tracker\Inc\Task_List->get_open_tasks_from_db() #2 /home/domain/public_html/wp-content/plugins/time-tracker/inc/class-tt-shortcode-open-task-list-table.php(48): Logically_Tech\Time_Tracker\Inc\Task_List->__construct() #3 /home/domain/public_html/wp-includes/shortcodes.php(343): Logically_Tech\Time_Tracker\Inc\Time_Tracker_Open_Task_List_Table->open_task_list_table_shortcode('', '', 'tt_open_task_li...') #4 [internal function]: do_shortcode_tag(Array) #5 /home/domain/public_html/wp-includes/shortcodes.php(218 in /home/domain/public_html/wp-content/plugins/time-tracker/inc/function-tt-utilities.php on line 277