Just pull the USB hub out and unplug everything from it. Reboot the machine and insert one device at a time into the hub. What's likely happened is that COMM ports have been reassigned to your devices.
Keep an eye on Device Manager and note down what the new ports are for each device and re-enter that information into the Gemini driver, etc.
Has happened to me plenty. Some ports are favoured over others sometimes. If it doesn't work on 5, try 6, and so on.
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