N64 Cirka Controller With mayflash = fail

Ok so I ordered a Cirka Brand Controller and a mayflash pc adapter. I first bought a blue Cirka Brand controller but when I tried to play, it would spam the start button non-stop and was deemed unplayable. I then ordered a red cirka brand controller thinking it would work fine. The red one proceeded to do the same damn thing-_-. Please help. I've tried switching the two slots in the adapter and everything