Received - and I see an http:504 response coming back from an individual device request. I just recently had been dealing the 504 errors and learned that cloud mode can only return 128k per request (link)
But, I can't imagine a single device request like the one below would be that large. I'll reply to your email with the full link -- see if you can view it.
07-02 15:37:47.712 18813 28502 E HD_CustomInterceptor: HTTP_ERROR: 59) http:504 10268ms https://cloud.hubitat.com/api/SNIP/apps/1077/devices/716, RESP:null
07-02 15:37:47.712 18813 27468 E HD_HubitatManager: onFailure: Garage Door, 716, RetrofitErrorEvent(errorCode=504, errorMessage=No response from hub)