I'm not sure what r529 is, but if it's saying remote 2 then that's telling you the recorder is set for remote code 2 and the actual remote is something other than that, eg. remote 1 or 3.
Again try and holding down the enter key and the number 2 on your remotes keypad for 5 seconds. It sounds like your batteries in the remote are OK since the DVDR is reading it, but it might not hurt to try another set.
Lastly you could try resetting the Panny to factory defaults although I seem to remember this does most everything but the remote code but it may be worth a try.
To do this power on the DVDR. Then hold both the channel up and channel down buttons on the DVDR for 10 seconds. The clock should go back to 12:00 and then try your remote. Again this "may" not reset your code, but it's a last ditch effort.