I have purchased Smarthings hub a couple of months ago as well as I have 2 Harmony hubs, one with a remote control and a second without. When I am trying to install the harmony hub, it installs the smartapp, but when is time to search for a hub, it looks for the hub for 20 minutes and it never found either of my hubs.
Can someone give me an idea of what I can do to correct this.
this is an ongoing issue that support is aware of and is working on now.
thank you. i hope it is resolved soon
me too I jsut got one and have the same issues
I was excited to receive my hub today but not so much now that SmartThings can’t find it.
That would make me crazy. 
Make sure you report the problem to support@smartthings.com so they can let you know if there’s a workaround before the fix is released.
Thank you for the suggestion, @JDRoberts . After following the pairing instructions from SmartThings support and failing, I decided to follow the pairing instructions on the Harmony App. I found success via that route and my Echo is now pared. I’m now busy learning what I can and cannot do with the system. Finding it funny that Alexa can “open” my blinds but cannot “close” them unless I “turn off” the blinds. I suppose I’ll be up late tonight studying her capabilities!
I really like Echo, but there are some quirks. 