I think there is a bug with the alarm. I use a model and when I set an alarm to 7:00, the widget display 6:00.
There IS 1 hour less.
When I set the alarm to 11:00, it s OK.
I suggest you test this with other presets, possibly one from scratch to check if this is an issue with the preset or with KWGT itself. Also, make sure to install the latest build of KWGT either from the Play Store or from the link below.