Wii Remote Plus disconnects in the game, but the controller still working

[MasterKillua]

Hi. I'm just bought my Wii Remote Plus, and when I play Wii Sports Resort (only game I have with bluetooth), and I go to select 1 Player (to start playing a minigame), the wii remote stops working in Dolphin, but the Wii Remote Plus is ON.
What Can I do? I just have the Wii Remote Plus. I don't have the nunchuck, that's why I just tried with Wii Sports Resort only.

Thanks in advance.

Ps: Sorry for my english.