I have found a pretty easy way to get this to work.
Firstly connect to the EufyLife and and get the MAC
Next open Terminal on your home assistant and write:
(AA:AA:AA:AA:AA:AA = your scales Mac)
bluetoothctl
power on
scan on
pair AA:AA:AA:AA:AA:AA
trust AA:AA:AA:AA:AA:AA
I then got a new device notification for the scales (in my case the C1)