Ok on these in the UK the wiring is the live goes to 1,2 and 3 as all them 3 will be connected by the bridging U clips.
Then the neutral is on 4 and 5 again with the U clip between the tags
Now if you only have a few U clip check the connection box as they sometimes clip them into the side or they are in a bag.
If you don't have the clips just get some cable thick enough and connect therminals 1,2 and 3 together with the live wire. and the same with the neutral on 4 and 5 and that will sort it.
If you need anymore info just get back to me.