Try clearing your browser cache.
Also, the current version of the plugin uses a different format for dates.
05-Dec-2019 -> 01-Jan-2020
The next version will revert to the format you are using now (dd-mm-yyyy) as the dates are not properly localized.
This is an unforeseen issue I didn’t think about and can’t work around – I thought servers could translate dates, turns out they can’t 🙄