Just a TIL - if you buy a #aeotec #smartthings hub, and it was manufactured before April 2024, there's a good chance it won't work, as the SSL cert in factory images before that expired in March 2025. You will likely get an error 33-504.
Once the firmware is updated, they're fine, but getting it to update is a challenge.
Workaround is to block NTP on your firewall, so the hub doesn't know what time it is upon reset, and it'll then happily work and update.
I just got a second hub from Amazon UK and it was manufactured in 2021, so it took a bit of digging to get the thing working.
https://community.smartthings.com/t/troubleshooting-smartthings-hub-2018-and-aeotec-hub/298332
Troubleshooting SmartThings Hub 2018 and Aeotec Hub
Use this guide for troubleshooting help with onboarding your Hub. We also include Hub replacement information if necessary. Overview When encountering the 33-504 error while claiming a SmartThings Hub 2018 (IM6001-V3P) or an Aeotec SmartThings Hub, the following root causes may apply: Your hub cannot access the internet over Ethernet or Wi-Fi connections Hubs manufactured before April 2024 may not have received firmware updates after production. If a Hub has not been claimed by March 2, 2025,...