Adding a 5 star because this issue is Mozilla's and not Raymond's and everybody giving 1 star reviews shouldn't be allowed on the internet

good.

It was great until firefox started blocking it.

firefox has disable many addons including this one, but that's ok, just set the following date and time settings on windows 10:
set the time automatically: off
change the date and time: 1st of may 2019 and don't change the time, because that's kinda useful to have on correctly.

J