If your address is QYbNCSCMGwXcdVoPd6CPZNS5DiiJ7K6JqK, to find out your Qora address seed
you would paste this into your browser: http://127.0.0.1:9085/addresses/seed/QYbNCSCMGwXcdVoPd6CPZNS5DiiJ7K6JqK
Don't use "localhost" as it seems old qora client can't handle IPv6/dual-stack.
Don't use the qora client's console as it has a bug if your seed starts with a digit

Of course you need the QORA client running and synced. There may be a dialog pop up that you need to click Yes to continue.

Also, If you're running Windows, then you can try this:
1. open a command prompt, e.g. by pressing Windows key  & 'R' then typing "cmd", might also work in PowerShell
2. type in this command: bitsadmin /transfer myDownloadJob /download /priority normal http://127.0.0.1:9085/addresses/seed/QYbNCSCMGwXcdVoPd6CPZNS5DiiJ7K6JqK %USERPROFILE%\Downloads\my-address-seed.txt
Obviously replace QYbNCSCMGwXcdVoPd6CPZNS5DiiJ7K6JqK with your own qora address
and you can replace %USERPROFILE%\Downloads\my-address-seed.txt with somewhere else to save the seed, e.g. C:\ if you don't want to save it into your "Downloads" folder