For the clicking sounds on every revolutions I would suggest the following :
-Make sure the pedals are installed in the right way (the pedal with R marked on it goes to the drive side, the side where the derailleur and chain are, it has to be tighten clockwise. the pedal with L on it goes to the Non-drive side, it has to be tighten counterclockwise)
-Sometimes it can happen it get a little bit loose after first few rides make sure they are tight again and good to go.
-Pedals has to be tighten pretty hard. I would suggest to use the wrench provided on side 13-15 and not using Allen keys
-Make sure just in case the pedals and crank arm threads are clean. If you want you can take off the pedals and clean in the threads just to make sure and tighten them back hard.
-On my bikes (Ebikes or standard) I usually clean the pedal and crank arm threads and use some blue loctite so it does not move anymore.