Thank you @darwindesign for the secure explanation which describes the issue that we are experiencing and it’s caused by changes within the screensaver 
.
I already changed the power on (aka resume from suspend) with sending OK and BACK (because otherwise the screen will stay in the powermenu) , which works nicely and G (aka 61511) to put it into suspend.
So with your explanation @Digitalfm is wiling to update the guide (Guide to using Harmony Elite Remote/hub via Bluetooth (Vero 4k+)), so that harmony hub users, can succesfully put the vero into suspend and take it out of it.