Only had installed for 2 - 3 weeks. No issues to date. Seems to be doing what it should so for. Right now, only AC is being used and my deaf blind wife likes the access thru her smart phone.
The contractor did not set it up as programmable, so I did. This was buried in the contractor settings, not easily available to the homeowner. But , once I set it up, it works great from my phone and Apple Watch, as well as using Geo Fencing.