Plugable USB Bluetooth (USB-BT4LE) Will Not Stay Connected

Windows 10 (all up to date), iPhone 4SE, (all up to date). Uninstalled all generic Bluetooth adapters from device manager as instructed. Windows installed the drivers for me automatically. I pair my iPhone just fine. It disconnects about 15 seconds later and they never find each other again. Distance is about 6 inches. Help Please!

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