clues m&m

i went to do the clue badge but couldnt get in where to do badge,it showed the ones i did ,also the ones i didnt get i pressed something but it say pay 20 gems but i wanted to do my m&m badge not new clues & spies after trying many times also i didnt have chat to ask any1 so i went to live chat and they offer me the badges i accepted but i wanted to do it myself and im still lost how do you get in there to do a m&m badge for the next time ,i know how to get in when a new clue is out hope some1 can help me