Open your logbook Enter the callsign to be logged in the ADD QSO box then click on ADD QSO I have tried it in yur logbook and it works/
Will not add new QSO from today. Message; this QSO is outside the range for this logbook it ends 2020-1-1
As stated - you must adjust the date range as follows. Open you logbook Click on SETTINGS then PROPERTIES Extend End Date to expiration date of your license