The V1 SmartThings hub was discontinued in June of 2021 and should not have been operational for more than a year. So I suspect you must have a different model. What’s the model number?
You can find a list of model numbers and associated generation names in the community-created wiki:
https://thingsthataresmart.wiki/index.php?title=Hubs
It can get confusing because the first model ever sold for the UK was generationally a V2, not a V1. Different technical specs. Again, the wiki article will detail these by model number.