You can't save face on this one. You jumped the gun giving advice without so much as looking at the timer. A link was provided with the specs and a photo.
230VAC, 16A, 3680W
You don't have to get bent out of shape about it. People make hasty mistakes a lot.
as above but where the black triangle is on the dial make sure you put the right time onto this arrow, so if its 1pm turn the dial till the 13 is on the arrow, and dont forget to flick the switch on the side to timer which is up on yours.
e.g if you want your lights to come on at say dinner time push all the black things down from 12 all the way to 6 this will give you 18 hours of light. just make sure you push all of them down and dont miss any.