Datepicker/Blackout problem - only choice is 2018
We have the "Datepicker Options" add-on installed and I am trying to add blackout dates for 2019 but I cannot choose any year other than 2018 as 2019 doesn't appear in the dropdown. I've tried using the option to set specific minimum and maximum dates but that doesn't change anything. Does anyone have any ideas on what the problem is? Thanks!