Just got the TV, encounter the same problem. factory reset doesn't help. I'm kinda stuck right now. Attempted to update the firmware via USB port, but failed. All the TV did was launching the media/photo player.
Just purchased a LG 65UH6030 yesterday, unable to load user agreement as well. Tried both wired, and wireless connection settings with no luck. I'm able to use the LG built-in web browser, so I'm sure the internet connection is active. I noticed the TV comes with 3.xx firmware, while the current is 4.xx. Tried to update the firmware, and it failed as well. "data decryption error." Anyone having similar issue?