Can’t connect battery doorbell

New doorbell has different code on box vs back of device , I’ve tried both codes for installation but the doorbell just will not sync to home base. I’ve done restarts , firmware is updated and still won’t work. I have 4 cameras that work fine. I bought the door unit singular to add to my home security system. Any ideas ?

Also have reset home base and added all my cameras again with no problem, doorbell still won’t connect

Which camera do you have? Battery or wired?

Battery camera

It’s on home base 1 , but should still work. Tried close up behind it as some others have claimed this worked. No luck

It does state on the website it requires a HB2 :confused:

Saw this in the help section…