I have a Smartthings Hub Gen 3 that was working fine until yesterday. It suddenly started showing blue blinking led then solid and back to normal green. I decided to reset wifi (15 sec push pin), then started "re-"adding the hub but since then it would not register (it fails at the hub registration step). Tried multiple times with Android and iOS clients with same error.
Tried wifi and ethernet and forwarding ports such as 11111 but it did not help. I’m sure the hub can connect to my router and access internet but it as if Samsung is blocking it!
The strange thing is the first time I tried to register it was successful but then returned back to blue led a few minutes later.
The hub events log shows a couple registration entries then disconnect and inactive. No other entries since then. That’s why I suspect Samsung has blocked the hub maybe due to too many registration attempts?
Did any experience such behavior?