STREAMDECK Support in Studio one 5

Hi, i have the same problem. Suddenly after updated to 5.3 the streamdeck stopps working within S1. I can't even get the Shortcut for Email Input in the "looking for updates" Window at the S1 Start, to work. Deinstall/Reinstall S1 and/or Elgato doesn't help. The Support Ticket can't help ...so what is going on? On Cubase it still works fine, on Windows it works fine, only on S1 not anymore.