What version did you have before update? Are you using an event import plugin with Smart Countdown FX?
Please open widget configuration in Appearance / Widgets and check the following options:
- Counter display mode – set it to “Auto – both countdown and count up”
- Counter animation profile – select one from the dropdown
- Event date and time – normally you would select one using datetime picker, but if you e.g. pasted it manually it must have MySQL format, i.e. YYYY-MM-DD hh:mm:ss
Save and check. One more question? Do the widget title and “loading” image appear before the whole widget is hidden?