@revk Handing over administrative control of a complicated system of routers, access points, some kind of uplink, possibly a Zigbee or Thread network, and a bunch of devices with local state currently can't be expected to work smoothly.
If I was the incoming owner/administrator I'd be expecting to wipe everything and start again at the very least.
A naive incoming owner wouldn't even know that that was needed. Expecting stuff to just keep working isn't really reasonable at the moment.