I was gone for 2 days and when I got back home my BT Smart Hub had reset some settings I had previously changed.
These include disabling the DHCP server (was re-enabled when I got back), removed my dynamic dns settings, removed my forwarded port settings among others. WiFi ssid and password don't seem to have been changed. Admin password also had to be reset as the password I had set did not work and the default password on the back of the hub caused the page to freeze.
I didn't see anything weird in the technical log and it says firmware was last updated 26th September. What gives?