Update for me: I tried 2 different new FE599s and neither work for the push notifications. I tried both the Monoprice and Aeotec Range extenders between the hub and lock and neither helped. No notifications at all… sigh.
So I gave up on the FE599 and just installed a Yale Assure YRL216-ZW2-619 (push button lever lock with key). Paired up to ST, programmed with LUM using the Enhanced DTH and it started pushing code notifications immediately!! Awesome.
Thanks @RBoy for all your feedback, but “draw of luck” is expensive at $200/pop for the FE599. LUM is of course great to use - no complaints there - my suggestion is to go for a Yale lock!