I've been through multiple phone calls, promised multiple return calls by the mysterious "Tier2" support. I still have not received a phone call from the elusive "Tier 2" team that hides in a cave somewhere that nobody can contact. My devices that I paid almost $200 for are nothing more than just three expensive pieces of plastic at this point, but the hub will not recognize the serial and connect. I've tried through the app, mychamberlain home page and I always get the 311 error. I am totally blown away at the total incompetence that I see from Chamberlain. I've tried everything I know to get them to let me talk to someone who can help me get this fixed and no one and I mean no one can get a hold of Tier 2 reps. Completely unacceptable from a company that is this big. If I don't get the phone call tomorrow from a Tier 2 rep I'm calling my credit card company and demanding my money back because Chamberlain refuses to address the faulty product they have sent me. If anyone has any suggestions on how to fix the 311 issues please let me know, obviously chamberlain doesn't.