Hi, @gvpopov
So, the engineering team mentioned that we need your help to follow the instructions here to disable the NTP port on the source side: Troubleshooting SmartThings Hub 2018 and Aeotec Hub
This should help to update your hub, please let us know if you have any issues. Just as a heads-up. If you don’t see any option to do this on your router, you might have to connect the hub to another one from a friend/family member.