Check the antenna connections on the remote and the drone. Since you have another question about the mode button, check the channel on the drone and the remote. Make sure they are on the same channel.
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Since you have another question about the mode button and syncing, I think you just need to sync it.
Check the antenna connections on the remote and the drone.
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Check the antenna connections on the remote and the drone. Since you have another question about the mode button, check the channel on the drone and the remote. Make sure they are on the same channel.