change of pi Zero to Pi3

I upgraded from a Zero to a Pi 3 and FlightAware has taken a wobbly, will it be the change of mac address that’s the problem?
also on the map it shows 2 positions for my receiver.

I had no problem with Flightradar24

Changing the hardware will create a new site, yes. You will need to configure the location of the new site. The old site will disappear after 30 days of inactivity.

Thanks I have only been off line for 20 hours and should be up an running soon.