I have a plus and have no problems. Sometimes if the keychain gets in the way I have a fail here and there so make sure that there is nothing blocking the IR port before connecting. If fact, when I want to make sure I am not going to gget a fail such as when breeding (If only one connects, you only get a baby on that tama and the failed one doesnt get a baby) then I make sure that the ports are actually TOUCHING. I hope that this helps.