I have been attempting to remove the Completed By date that has originally been selected. But It seems that it wont delete after clicking update. I can change the date just fine, but if I delete the old date and click update the old date re-appears in the input field.
I have tried flushing cache, both wordpress and browser. Tried different browsers as well.
For now I used PHP MyAdmin edited the Options table:
Specifically I updated tco_under_construction
in the database and changed "tco_under_construction_date";s:0:"";
hence removing the date.