I'm on the newest firmware. I do have the management app which I used to disable standby mode altogether. Doesn't help though, so it seems they're dropping connection for some other reason. Connection dropping is something I've read can happen after a couple of years constant use, so I've bitten the bullet and just ordered a new set.Could try updating firmware (if that’s possible), I think there is some software that manages the adapters (don’t recall what sorry).
Well, I'd hope the wiring is pretty good since all the properties in this area are not that old at all. The adapters at both ends are plugged directly into the wall sockets with nothing in-between.Failing that what state is the electrical wiring and topology (ie are you using any surge protectors etc? Fuse boxes to traverse...)
We'll see how the new ones do. If I get issues I'll send them back and start looking into another solution.