Plugin Stops Working Spontaneously

We were delighted to find this plugin but then for some reason hours later it totally stopped working. Not matter how many times we activeated and deactivated it it would not come back.

Out cut off time is 3pm and delivery by 6pm, but we have to set cut off time to 7pm to get the hours right, its annoying and now it stopped working when we were relying on the time to show our customers when they would recieve their orders during this holiday when operations are closed.

https://wordpress.org/plugins/delivery-countdown-timer/