After applying the latest firmware update, my two KP400 smart plugs are now greyed-out; all other plugs and switches are fine.  Rebooting my router, unpowering and repowering the plugs, and rebooting my mobile device have not corrected the issue (upon repowering, the wifi light on the plugs initially flash red once, then green three or four times, and then turn a solid amber).  Any suggestions as to what should be my next steps.  Thanks !

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