Logitech K585 CMD button on Mac no longer working

[bluecountry]

OK so I have this setup with my personal mac and my windows computers connected to a KSM using a logitech k585 keyboard.
All was well until there was a bluetooth issue today, fixed it, but now my logitcech keyboard has issues with the mac.
When I hit the CMD button and try to copy or paste, I get ÍŠand so fourth.
Yes, I have gone to Sys Prefer>Keyboard>Modifer, yes I have checked and yes they are set correctly.
Yes I have toggled, switched, done all that, NOTHING works.
The only thing that helped, I switched the CTRL button to be CMD, now I can cut and paste with CTRL like I would with CMD; yet CMD itself STILL WILL NOT WORK.
Yes my mac is up to date.
WTF?
Worse, my typing at times stops, like the connection has been lost, so I have to turn off the power button on the KSM switch then turn it back on.
Is there anything I can do, or do I have to accept the CMD will never work as intended again because either Mac or Logitech or the KSM suck?

[hotdogPi]

√ç≈

The computer thinks you're pressing option.

[bluecountry]

√ç≈

The computer thinks you're pressing option.

But the keyboard modifier has CMD being CMD...

[Max Rockatansky]

Trouble with your Logitech device?  Plug it into a submarine and it should clear the problem.

[bluecountry]

Trouble with your Logitech device?  Plug it into a submarine and it should clear the problem.

Why they suck?