Have you tried starting the truck with your second key? (Assuming you have one). This might rule out a defect in the key itself.
Really does sound like some other problem though, possibly related to the remote starter. Is this a device you recently installed? Is it something that could be temporarily "uninstalled"?
- Jack
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2024 F150 Platinum SCrew 3.5L PowerBoost FX4, Peragon Tonneau Cover, LineX Bed, 35% Window Tint on All Sides and Rear, Full Nose Paint Protection Film, Husky Mud Guards, Lasfit Floor Liners, VIOFO Dash Cam
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